@article{2-s2.0-85062965884,

title = {New minerals with modular structure derived from hatrurite from the pyrometamorphic rocks. Part IV: Dargaite, BaCa12(SiO4)4(SO4)2O3, from Nahal Darga, Palestinian Autonomy},

author = { I.O. Galuskina and F. Gfeller and E.V. Galuskin and T.M. Armbruster and Y. Vapnik and M. Dulski and M. Gardocki and L. Jeżak and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062965884&doi=10.1180%2fminmag.2017.081.095&partnerID=40&md5=a30918086875a41b951988ec853674f9},

doi = {10.1180/minmag.2017.081.095},

issn = {0026461X},

year  = {2019},

date = {2019-01-01},

journal = {Mineralogical Magazine},

volume = {83},

number = {1},

pages = {81-88},

publisher = {Cambridge University Press},

abstract = {Dargaite, ideally BaCa12(SiO4)4(SO4)2O3, is an additional member of the arctite group belonging to minerals with a modular intercalated antiperovskite structure derived from hatrurite. The holotype specimen was found at a small outcrop of larnite pseudoconglomerates in the Judean Mts, West Bank, Palestinian Autonomy. Larnite, fluorellestadite-fluorapatite, brownmillerite, fluormayenite-fluorkyuygenite and ye'elimite are the main minerals of the holotype specimen; ternesite, shulamitite and periclase are noted rarely. Dargaite, nabimusaite and gazeevite occur in linear zones with higher porosity within larnite rocks. Pores are filled with ettringite and Ca-hydrosilicates, less commonly with gibbsite, brucite, baryte, katoite and calciolangbeinite. Dargaite is colourless, transparent with a white streak and has a vitreous lustre. It exhibits pronounced parting and imperfect cleavage along (001). Mohs' hardness is ~4.5-5.5. The empirical formula is (Ba0.72K0.24Na0.04)Σ1(Ca11.95Mg0.04Na0.01)Σ12([SiO4]0.91 [PO4]0.05[AlO4]0.03[Ti4+O4]0.01)Σ4([SO4]0.84[PO4]0.14[CO3]0.02)Σ2(O2.54F0.46)Σ3. Dargaite is trigonal Rm, the unit-cell parameters are: a = 7.1874(4) Å},

note = {4},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85051755085,

title = {First natural hexaferrite with mixed B′-ferrite (B-alumina) and magnetoplumbite structure from Jabel Harmun, Palestinian Autonomy},

author = { E.V. Galuskin and I.O. Galuskina and R. Widmer and T.M. Armbruster},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051755085&doi=10.1127%2fejm%2f2018%2f0030-2697&partnerID=40&md5=10646df728677f92d0539d3539e1f2f0},

doi = {10.1127/ejm/2018/0030-2697},

issn = {09351221},

year  = {2018},

date = {2018-01-01},

journal = {European Journal of Mineralogy},

volume = {30},

number = {3},

pages = {559-567},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Ferrites of K and Ba close in composition to the known synthetic compounds KFe2+2 Fe3+15 O25 and BaMg2Fe3+16 O27 were found in a thin vein, filled with magnesioferrite and khesinite, in pyrometamorphic flamite–gehlenite hornfels of the Hatrurim Complex, Palestinian Autonomy. Both ferrites are characterized by a modular structure composed of 5-layered spinel (S) blocks interstratified with R-blocks. The R-modules of K-ferrite are of the b-alumina type whereas those in Ba-ferrite are of the magnetoplumbite type. Rare grains of K-Ba-ferrite of intermediate composition with the empirical crystal chemical formula (EPMA): (K0:57Ba0:38Na0:05)Σ1(Fe3+14:08Mg1:42Al0:80Zn0:59Ni0:16Ca0:14Cu0:09Mn0:03Ti0:03Si0:02)Σ17:36O25:54, were also discovered. The structure of the natural mixed potassium-barium ferrite was investigated by single-crystal X-ray diffraction. The hexagonal space-group symmetry (P6m2; Z = 2) with a = 5.9137(2) and c = 33.1450(15) Å is different to that (P63/mmc) oftheend-members and yields alternate stacking of b-alumina type KMg2Fe15O25 and magnetoplumbite type BaMg2Fe16O27 “supermodules”, each extending ½ of the unit cell along c. Raman spectroscopic study confirms the mixed character of K-Ba-ferrite structure. K-Ba-ferrite formed at non-equilibrium conditions and may be interpreted as an example of a nano-dissipative structure. © 2018 E. Schweizerbart’sche Verlagsbuchhandlung.},

note = {6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85021137837,

title = {New minerals with a modular structure derived from hatrurite from the pyrometamorphic rocks. Part III. Gazeevite, BaCa6(SiO4)2(SO4)2O, from Israel and the Palestine Autonomy, South Levant, and from South Ossetia, Greater Caucasus},

author = { E.V. Galuskin and F. Gfeller and I.O. Galuskina and T.M. Armbruster and A. Krzątała and Y. Vapnik and J. Kusz and M. Dulski and M. Gardocki and A.G. Gurbanov and P. Dzierzanowski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021137837&doi=10.1180%2fminmag.2016.080.105&partnerID=40&md5=a3eaf4dbf264465c2637bf98d1c5560a},

doi = {10.1180/minmag.2016.080.105},

issn = {0026461X},

year  = {2017},

date = {2017-01-01},

journal = {Mineralogical Magazine},

volume = {81},

number = {3},

pages = {499-513},

publisher = {Mineralogical Society},

abstract = {The new mineral gazeevite, BaCa6(SiO4)2(SO4)2O (R3m; a = 7.1540(1); c = 25.1242(5) Å; V = 1113.58(3) Å3; Z = 3), was found in an altered xenolith in rhyodacites of the Shadil-Khokh volcano, Southern Ossetia and at three localities in larnite pyrometamorphic rocks of the Hatrurim Complex; Nahal Darga and Jabel Harmun, Judean Mountains, Palestinian Autonomy, and Har Parsa, Negev Desert, Israel. Larnite, fluorellestadite-fluorapatite, srebrodolskite-brownmillerite andmayenite-supergroup minerals are the main minerals commonly associated with gazeevite. Gazeevite is isostructural with zadovite and aradite; the 1:1 type AB6(TO4)2(TO4)2W, occurs together with the structurally related minerals of the nabimusaite series, 3:1 type AB12(TO4)4(TO4)2W3, where A = Ba, K, Sr...; B=Ca, Na...; T = Si, P, V5+, S6+, Al...; W=O2-, F-. Single antiperovskite layers {[WB6](TO4)2} in the structure type of gazeevite-zadovite and triple {[W3B12] (TO4)4} layers in arctite-nabimusaite are intercalated with single A(TO4) layers. These minerals with an interrupted antiperovskite structure are characterized by a modular layered structure derived from hatrurite, Ca3(SiO4)O. Gazeevite is colourless, transparent, with a white streak and vitreous lustre. Gazeevite is brittle, shows pronounced parting and imperfect cleavage on {001}; it is uniaxial (-), ω = 1.640(3), ϵ = 1.636(2) (λ = 589 nm) and nonpleochroic; Mohs' hardness is ~4.5},

note = {17},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85015785942,

title = {Khesinite, Ca4Mg2Fe3+10O4 [(Fe3+10Si2)O36], a new rhönite-group (sapphirine supergroup) mineral from the Negev Desert, Israel - Natural analogue of the SFCA phase},

author = { I.O. Galuskina and E.V. Galuskin and A.S. Pakhomova and R. Widmer and T.M. Armbruster and B. Krüger and E.S. Grew and Y. Vapnik and P. Dzierazanowski and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015785942&doi=10.1127%2fejm%2f2017%2f0029-2589&partnerID=40&md5=4e9a94689eb4b6c657a1d499be68e33d},

doi = {10.1127/ejm/2017/0029-2589},

issn = {09351221},

year  = {2017},

date = {2017-01-01},

journal = {European Journal of Mineralogy},

volume = {29},

number = {1},

pages = {101-116},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Khesinite, Ca4Mg2Fe3+10O4 (Fe3+10Si2)O36, is a new member of the rhönite group of the sapphirine supergroup. Khesinite was discovered in thin veins of paralavas within fine-grained gehlenite rocks (hornfels) of the Hatrurim Complex in the Negev Desert, Israel. Paralavas are composed of rankinite, pseudowollastonite (rarelywollastonite),flamite, kalsilite, cuspidine and members of the solid-solution series: Schorlomite-andradite, gehlenite-ackermanite-"Fe3+-gehlenite", magnesioferrite-spinel and fluorapatite-fluorellestadite. Accessory and rare minerals are represented by baryte, walstromite, fresnoite, vorlanite, barioferrite, hematite, perovskite, gurimite, zadovite, aradite and hexacelsian. Electron-microprobe analysis of the holotype khesinite gives the following empirical formula for 40 oxygens and 28 cations: Ca4 (Fe3+8.528Mg1.635Ca0.898Ti4+0.336Ni2+0.217Mn2+0.155Cr3+0.132Fe2+0.098)∑12 [(Fe3+6.827Al2.506Si2.667)S12O40]. Khesinite is black to dark brown. It has semi-metallic lustre and does not show fluorescence. Cleavage and parting are not observed, fracture is irregular. Khesinite has a Mohs' hardness of 6; microhardness VHN50 is 943 kgmm-2. The calculated density is 4.097 g cm--3. In reflected light khesinite is grey with weak internal brown reflections. Reflectance data for the COM(Commission of Ore Mineralogy; IMA) wavelengths vary from ∼13.4% (470 nm) to ∼11.8% (700 nm). The crystal structure of khesinite [P1 a = 10.5363(1); b = 10.9242(2); c = 9.0612(1) Å; a = 106.340(1)°; b = 95.765(1)°; g = 124.373(1)°; V= 780.54(2)Å3] was refined fromX-ray single-crystal data to R1 = 0.046. The khesinite structure is close to that of the synthetic compounds SFCA and SFCAM. Khesinite crystallized in paralava from melt, sometimes forming isolated crystals, but more commonly reaction rims onmagnesioferrite in associationwith pseudowollastonite and flamite at temperature not lower than 1200 °C. © 2016 E. Schweizerbart'sche Verlagsbuchhandlung.},

note = {21},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84954345954,

title = {The crystal structure of flamite and its relation to Ca2SiO4 polymorphs and nagelschmidtite},

author = { F. Gfeller and R. Widmer and B. Krüger and E.V. Galuskin and I.O. Galuskina and T.M. Armbruster},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954345954&doi=10.1127%2fejm%2f2015%2f0027-2476&partnerID=40&md5=81ad408b79e8216a9da369ad57686411},

doi = {10.1127/ejm/2015/0027-2476},

issn = {09351221},

year  = {2015},

date = {2015-01-01},

journal = {European Journal of Mineralogy},

volume = {27},

number = {6},

pages = {755-769},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {The recently accepted new mineral flamite IMA No. 2013-122, (Ca;Na;K)2(Si;P)O4, found in the pyrometamorphic rocks of the Hatrurim Formation, Israel, was reported to crystallize in the hexagonal space group P63 with unit-cell parameters a = 43.3726(18)},

note = {16},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84954324601,

title = {New minerals with a modular structure derived from hatrurite from the pyrometamorphic Hatrurim Complex. Part II. Zadovite, BaCa6[(SiO4)(PO4)](PO4)2F and aradite, BaCa6[(SiO4)(VO4)](VO4)2F, from paralavas of the Hatrurim Basin, Negev Desert, Israel},

author = { E.V. Galuskin and F. Gfeller and I.O. Galuskina and A.S. Pakhomova and T.M. Armbruster and Y. Vapnik and R. Włodyka and P. Dzierzanowski and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954324601&doi=10.1180%2fminmag.2015.079.5.04&partnerID=40&md5=e5daebedf32df0f42614faceae261a53},

doi = {10.1180/minmag.2015.079.5.04},

issn = {0026461X},

year  = {2015},

date = {2015-01-01},

journal = {Mineralogical Magazine},

volume = {79},

number = {5},

pages = {1073-1087},

publisher = {Mineralogical Society},

abstract = {Zadovite, BaCa6[(SiO4)(PO4)](PO4)2F (R3m; a = 7.0966(1) Å; c = 25.7284(3); V= 1122.13(3) Å3; Z= 3) and aradite, BaCa6[(SiO4)(VO4)] (VO4)2F(R3m;a = 7.1300(1);c = 26.2033(9) Å; V= 1153.63(6) A3;Z= 3) are two new mineral species of a novel modular structure type related closely to the structure of nabimusaite, KCa12(SiO4)4(SO4)2O2F Both minerals occur in paralavas enclosed in pyrometamorphic rocks of the Hatrurim Complex, Negev desert, Israel. Zadovite and aradite are colourless, transparent with a white streak, have a vitreous lustre and an uneven fracture. Both minerals are uniaxial (-) with refractive indices (589 nm) ω= 1.711(2), ε = 1.708(2) (zadovite) and ω = 1.784(3), ε = 1.780(3) (aradite). The zadovite structure type comprises two tetrahedral sites, which may host a broad compositional range of atoms such as Si, P, V and S. Results of electron microprobe analyses show a correlation between excess Si4+ and S6+ contents, suggesting the substitution scheme 2(P;V)5+ = Si4+ + S6+ at the tetrahedral sites. This points to the possibility of new minerals isostructural with zadovite with end-member formulae BaCa6(SiO4)2[(PO4)(SO4)]F, BaCa6(SiO4)2[(VO4)(SO4)]F, BaCa6[(SiO4)1.5(SO4)0.5](PO4)2F and BaCa6[(SiO4)1.5(SO4)0.5](VO4)2F. The Raman spectra of aradite and zadovite reflect the varying PO4 (e.g. change of band intensity at ~ 1031 cm-1) and VO4 contents (e.g. change of band intensity at ~835 cm-1). The presence of SO4 leads to an additional Raman band at ~ 997 cm-1. The structure of zadovite-series minerals belonging to the nabimusaite group is characterized by a 1 : 1 alternation of antiperovskite-like ([FCa6](TO4)2}4+ modules and Ba(TO4)42- modules. © 2015 by Walter de Gruyter Berlin/Boston.},

note = {23},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84954313679,

title = {New minerals with a modular structure derived from hatrurite from the pyrometamorphic Hatrurim Complex. Part I. Nabimusaite, KCa12(SiO4)4(SO4)2O2F, from larnite rocks of Jabel Harmun, Palestinian Autonomy, Israel},

author = { E.V. Galuskin and F. Gfeller and T.M. Armbruster and I.O. Galuskina and Y. Vapnik and M.N. Murashko and R. Włodyka and P. Dzierzanowski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954313679&doi=10.1180%2fminmag.2015.079.5.03&partnerID=40&md5=190fb4cdbe20c5c66211ef573acf895e},

doi = {10.1180/minmag.2015.079.5.03},

issn = {0026461X},

year  = {2015},

date = {2015-01-01},

journal = {Mineralogical Magazine},

volume = {79},

number = {5},

pages = {1061-1072},

publisher = {Mineralogical Society},

abstract = {The new mineral nabimusaite, KCa12(SiO4)4(SO4)2O2F (R3m; a = 7.1905(4); c = 41.251(3) Å; V = 1847.1(2) Å3; Z = 3), has been discovered in larnite-ye'elimite nodules of pyrometamorphic rocks of the Hatrurim Complex. Nabimusaite is colourless, transparent with awhite streak, has a vitreous lustre and does not show luminescence. It is brittle, but shows pronounced parting and imperfect cleavage along (001). Nabimusaite is uniaxial (-), ω = 1.644(2), ε = 1.640(2) (589 nm), nonpleochroic, Mohs' hardness is ~5 and the calculated density is 3.119 g cm-3. The crystal structure has been solved and refined to R1 = 0.0416. Its artificial analogue is known. The nabimusaite structure may be derived from that of hatrurite, also known as the clinker phase 'alite' (C3S=Ca3SiO5), and is built up by an intercalation of three positively charged hatrurite-like modules of composition [Ca12(SiO4)4O2F]3+ with inserted modules of [K(SO4)2]3-. The hatrurite-like modules in nabimusaite are characterized by octahedrally coordinated anion sites and tetrahedrally coordinated cation sites. The structure is representative of the intercalated antiperovskite type. In contrast to its synthetic analogue, nabimusaite is P-bearing. The shortened bond T-O lengths for one tetrahedral site indicates P preference at the Si2 site, located at the border of the hatrurite-like modules. Significant variations of isomorphous substitutions in nabimusaite suggest the possibility of other isostructural minerals occurring in Nature. It also seems likely that nabimusaite could serve as a prototype for new advanced synthetic materials, given the discovery of two other new minerals in the Hatrurim Complex with related modular structures, placed in the nabimusaite group. These are zadovite and aradite, as described in a companion paper (Galuskin et al.; 2015a). The mineral assemblage and paragenesis of nabimusaite suggests that nabimusaite formed as a result of the reaction of potassium-enriched, sulfate-bearing melt with larnite and ellestadite. This contradicts the isochemical model that pyrometamorphic rocks of the Hatrurim Complex formed relatively fast in a practically dry system. © 2015 by Walter de Gruyter Berlin/Boston.},

note = {20},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84945194608,

title = {Fluorchegemite, Ca7(SiO4)3F2, a new mineral from the edgrewite-bearing endoskarn zone of an altered xenolith in ignimbrites from upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia: Occurrence, crystal structure, and new data on the mineral assemblages},

author = { I.O. Galuskina and B. Krüger and E.V. Galuskin and T.M. Armbruster and V.M. Gazeev and R. Włodyka and M. Dulski and P. Dzierzanowski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945194608&doi=10.3749%2fcanmin.1400084&partnerID=40&md5=4489594bd8ffb1fa8948536240a6b9e3},

doi = {10.3749/canmin.1400084},

issn = {00084476},

year  = {2015},

date = {2015-01-01},

journal = {Canadian Mineralogist},

volume = {53},

number = {2},

pages = {325-344},

publisher = {Mineralogical Association of Canada},

abstract = {Fluorchegemite, Ca7(SiO4)3F2 [Pbnm; a 5.0620(1); b 11.3917(2); c 23.5180(3) A; V 1356.16(4) A3; Z = 4], the F-analog of chegemite, Ca7(SiO4)3(OH)2 [Pbnm; a 5.0696(1); b 11.3955(1); c 23.5571(3) A; V 1360.91(4) A3; Z = 4], was found in an edgrewite-bearing zone of endoskarn at the contact of a large altered calciferous xenolith within ignimbrites of the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. Fluorchegemite is associated with the high-temperature minerals larnite, edgrewite, wadalite, eltyubyuite, rondorfite, lakargiite, Th-rich kerimasite, and with their alteration products such as bultfonteinite, killalaite, hillebrandite, afwillite, trabzonite, and jennite. Fluorchegemite is colorless, and the streak is white. It forms irregular grains up to 0.2 mm. Fluorchegemite gave the following optical data: biaxial (-), α 1.610(2), β 1.6150(2), γ 1.619(2) (589 nm), 2Vz (meas.) = 80(8)°, 2Vz (calc.) = 84°, Δ = 0.009, dispersion r > v, weak; non-pleochroic. Density (calc.) = 2.91 g cm-3. The micro-hardness VHN (loaded 50 g) ranges between 480 and 511 kg mm-2, with an average value (mean of four measurements) of 499(10) kg mm-2, corresponding to a Mohs hardness of 5.5-6. The main bands in the Raman spectrum of fluorchegemite are at 258, 297, 410, 422, 560, 817, 843, 922, 3539, 3548, and 3552 cm-1. Strong lines of the calculated X-ray diffraction pattern are [d (hkl)I]: 2.531(200)100, 1.905(227)90, 2.718(117)63, 3.013(131)57, 2.991(116)56, 3.636(114)52, 2.832(133)51, 2.699(134)46. The empirical formula of fluorchegemite from the holotype specimen is (Ca7.01Mg0.01)Σ7.02 (Si2.98Ti4+0.01)Σ2.99O12 [F1.40 (OH)0.60]Σ2.00. The Ca-humite minerals often form lens-shaped aggregates within the endoskarn zone. The elongated axis of the lens is oriented subperpendicular to the front of metasomatic replacement (skarn zonality). Lens-shaped aggregates of grains are interpreted as contours of replaced quartz phenocrysts in the ignimbrite. The mechanism of this lens formation is discussed. Moreover, lens-shaped aggregates of hydroxyledgrewite occur as rock-forming minerals in an endoskarn zone of a newly discovered xenolith within the Upper Chegem Caldera. In addition, the second finding of the Ca-humite minerals fluorchegemite and kumtyubeite, in an altered xenolith of the Shadil-Khokh volcano, Southern Ossetia, is reported.},

note = {6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84923013541,

title = {Mayenite supergroup, part I: Recommended nomenclature},

author = { E.V. Galuskin and F. Gfeller and I.O. Galuskina and T.M. Armbruster and R. Bailau and V.V. Sharygin},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923013541&doi=10.1127%2fejm%2f2015%2f0027-2418&partnerID=40&md5=d0bfe86a8b5741a907397ccd2cc4aa22},

doi = {10.1127/ejm/2015/0027-2418},

issn = {09351221},

year  = {2015},

date = {2015-01-01},

journal = {European Journal of Mineralogy},

volume = {27},

number = {1},

pages = {99-111},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {The mayenite supergroup, accepted by the IMA-CNMNC (proposal 13-C), is a new mineral supergroup comprising two groups of minerals isostructural with mayenite (space group No. 220; I43d; a ≈ 12 Å) with the general formula X12T14O32-x(OH)3x[W6-3x]: the mayenite group (oxides) and the wadalite group (silicates), for which the anionic charge over 6 W sites is -2 and -6, respectively. Currently only minerals dominated by end-members with x = 0 and the simplified formula X12T14O32[W6] have been reported. The mayenite group includes four minerals: (1) chlormayenite, Ca12Al14O32[□4Cl2]; (2) chlorkyuygenite, Ca12Al14O32[(H2O)4Cl2]; (3) fluormayenite, Ca12Al14O32[□4F2]; and (4) fluorkyuygenite, Ca12Al14O32[(H2O)4F2]. The wadalite group comprises the two mineral species wadalite, with the end-member formula Ca12Al10Si4O32[Cl6], and eltyubyuite, with the end-member formula Ca12Fe3+10Si4O32[Cl6]. Current research on minerals and synthetic compounds indicates that minerals close to the composition of ideal end-members, such as Ca12Fe3+10Si4O32[F6], Ca12Si9Mg5O32[Cl6] and Ca12Al14O30(OH)6[□6], could be found in Nature. A detailed re-examination of the type specimens of mayenite, originally described as Ca12Al14O33, indicates that Ca12Al14O32[□4Cl2] is its correct end-member formula. Consequently, we are redefining and renaming mayenite as chlormayenite, Ca12Al14O32[□4Cl2], whereas the name mayenite would be reserved for a potential mineral with the end-member composition Ca12Al14O32[□5O]. As a consequence, the mineral brearleyite, Ca12Al14O32[□4Cl2], described in 2011 is identical with chlormayenite and is therefore discredited. By analogy with chlormayenite we changed the name of kyuygenite into chlorkyuygenite. © 2014 E. Schweizerbart';sche Verlagsbuchhandlung.},

note = {22},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84923007808,

title = {Mayenite supergroup, part IV: Crystal structure and raman investigation of Al-free eltyubyuite from the Shadil-Khokh volcano, Kel' Plateau, Southern Ossetia, Russia},

author = { F. Gfeller and D. ͆rodek and J. Kusz and M. Dulski and V.M. Gazeev and I.O. Galuskina and E.V. Galuskin and T.M. Armbruster},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923007808&doi=10.1127%2fejm%2f2015%2f0027-2421&partnerID=40&md5=81748111df480db22d0c437931c76116},

doi = {10.1127/ejm/2015/0027-2421},

issn = {09351221},

year  = {2015},

date = {2015-01-01},

journal = {European Journal of Mineralogy},

volume = {27},

number = {1},

pages = {137-143},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Eltyubyuite, ideally Ca12Fe3+10Si4O32Cl6, a member of the mayenite supergroup, was originally described from altered xenoliths of the Upper Chegem, northern Caucasus, Russia, and Eifel, Germany, where it forms a solid-solution with wadalite (Ca12Al10Si4O32Cl6). The structure of the holotype was confirmed earlier using electron backscatter diffraction. The larger crystal size of Al-free eltyubyuite from a new occurrence in an altered carbonate-silicate xenolith enclosed in plagiodacites of the Shadil-Khokh volcano, Kel' Plateau, Southern Ossetia, enabled the first direct refinement of the eltyubyuite crystal structure. At this locality, Al-free eltyubyuite occurs in a contact zone of the xenolith, within small veins composed of rusinovite, cuspidine and rondorfite. The structure of the Al-free eltyubyuite crystal (dimensions: 20 x 15 x 10 μm) was refined from X-ray diffraction data to R1 = 0.019. Eltyubyite (cubic; space group I43d; a = 12.2150 (2) Å; V = 1822.55(6) Å3; Z = 2) is isostructural with mayenite. Both tetrahedra are Fe3+-dominant: the T1 site (= 1.848 Å) contains 0.85 Fe3+ and 0.15 Si4+, whereas the T2 site (= 1.766 Å) has 0.59 Fe3+ and 0.41 Si4+. Based on electron microprobe data, the empirical formula of eltyubyuite from Ossetia is Ca12.044(Fe3+10.373Si3.473Ti4+0.067Mn2+0.021Mg0.021)Σ13.956O32Cl5.455. Raman spectroscopy recorded bands with increased half-width due to Fe3+ and Si4+ disorder at the two tetrahedral sites T1 and T2. The Raman bands at 959 and 901 cm-1 have been assigned to Si-O stretching vibrations (ν1 and ν3) of (SiO4)4-. The group of bands at 783 (ν3), 705 (ν1), 450 (ν4), 307 (ν2) cm-1 correspond to Fe-O vibration of (Fe3+O4)5-. © 2014 E. Schweizerbart'sche Verlagsbuchhandlung.},

note = {14},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84923006158,

title = {Mayenite supergroup, part III: Fluormayenite, Ca12Al14O32 [□4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant},

author = { E.V. Galuskin and F. Gfeller and T.M. Armbruster and I.O. Galuskina and Y. Vapnik and M. Dulski and M.N. Murashko and P. Dzierzanowski and V.V. Sharygin and S.V. Krivovichev and R. Wirth},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923006158&doi=10.1127%2fejm%2f2015%2f0027-2420&partnerID=40&md5=6ba69ffd7446ad2cc86a5a1a49b0b833},

doi = {10.1127/ejm/2015/0027-2420},

issn = {09351221},

year  = {2015},

date = {2015-01-01},

journal = {European Journal of Mineralogy},

volume = {27},

number = {1},

pages = {123-136},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Two new mineral species of the mayenite group, fluormayenite Ca12Al14O32[□4F2] (I43d; a = 11.9894(2) Å; V = 1723.42(5) Å3; Z = 2) and fluorkyuygenite Ca12Al14O32[(H2O)4F2] (I43d; a = 11.966(2) Å; V = 1713.4(1) Å3; Z = 2), are major constituents of larnite pyrometamorphic rocks of the Hatrurim Complex (Mottled Zone) distributed along the Dead Sea rift on the territory of Israel, Palestinian Autonomy and Jordan. Holotype specimens of fluormayenite and fluorkyuygenite were collected at the Jabel Harmun, Judean Mts., Palestinian Autonomy and in the Hatrurim Basin, Negev Desert, Israel, respectively. Mineral associations of holotype fluormayenite and fluorkyuygenite are similar and include larnite, shulamitite, Cr-containing spinel-magnesioferrite series, ye'elimite, fluorapatite-fluorellestadite, periclase, brownmillerite, oldhamite as well as the retrograde phases portlandite, hematite, hillebrandite, afwillite, foshagite, ettringite, katoite and hydrocalumite. Fluormayenite and fluorkyuygenite crystals, usually < 20 μm in size, are colourless, in places with greenish or yellowish tint, the streak is white. Both minerals are transparent with a vitreous lustre; they do not show fluorescence. Fluormayenite and fluorkyuygenite are isotropic and have similar refractive indices: n = 1.612(3) and n = 1.610(3) (589 nm), respectively. The hardness of fluormayenite and fluorkyuygenite is H (Mohs) 51/2-6; VHN load 50 g, 771(38) kg mm-2; and 5-51/2; VHN load 50 g, 712(83) kg m-2, respectively. Both minerals have the microporous tetrahedral framework structure characteristic of the mayenite supergroup. In fluormayenite 1/3 of the structural cages are occupied by fluorine. In fluorkyuygenite, in addition to fluorine and negligible amounts of OH, H2O molecules occupy about 2/3 of the cages. The holotype fluormayenite from Jabel Harmun has the crystal chemical formula (Ca11.951Na0.037)Σ11.987(Al13.675Fe3+0.270Mg0.040Si0.009P0.005S6+0.013)Σ14.013 O31.503(OH)1.492[□4.581F1.375Cl0.044]Σ6, fluorkyuygenite from the Hatrurim Basin has the composition Ca12.034(Al13.344Fe3+0.398 Si0.224)Σ13.966O32[(H2O)3.810F1.894 (OH)0.296]Σ6. Raman spectra of fluormayenite and fluorkyuygenite in the spectral region 200-1000 cm-1 are similar and are characterized by the four strong main bands at about 320 (ν2 AlO4), 520 (ν4 AlO4), 700, 770 (ν1 AlO4) cm-1. In the O-H vibration region fluorkyuygenite shows a broad band between 2600-3500 cm-1 (νH2O). The molecular water is completely released from the fluorkyuygenite structure at about 400°C. Fluorkyuygenite crystallized initially as fluormayenite, which later was altered under influence of water vapour-enriched gases during a combustion process. Fluormayenite has been synthesized and fluorkyuygenite is an analogue of the recently discovered chlorkyuygenite, Ca12Al14O32[(H2O)4Cl2], from the Northern Caucasus, Russia. © 2014 E. Schweizerbart sche Verlagsbuchhandlung.},

note = {26},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84923005014,

title = {Mayenite supergroup, part II: Chlorkyuygenite from upper chegem, Northern Caucasus, Kabardino-Balkaria, Russia, a new microporous mineral with "zeolitic" H2O},

author = { E.V. Galuskin and I.O. Galuskina and J. Kusz and F. Gfeller and T.M. Armbruster and R. Bailau and M. Dulski and V.M. Gazeev and N.N. Pertsev and A.E. Zadov and P. Dzierzanowski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923005014&doi=10.1127%2fejm%2f2015%2f0027-2419&partnerID=40&md5=2d889a35d429001bb691bf79b1f5a345},

doi = {10.1127/ejm/2015/0027-2419},

issn = {09351221},

year  = {2015},

date = {2015-01-01},

journal = {European Journal of Mineralogy},

volume = {27},

number = {1},

pages = {113-122},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {The new mineral chlorkyuygenite, Ca12Al14O32[(H2O)4Cl2] (I43d; a|12.0285(1)Å; V=1740.34(3)Å3), was discovered as an accessory mineral in Ca-humite zones of calcareous skarn xenoliths in ignimbrites of the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. Rounded grains and crystals with tris-tetrahedral form of chlorkyuygenite up to 50μm and aggregates up to 100-150μm in size are enclosed in chegemite, reinhardbraunsite and srebrodolskite. Chlorkyuygenite also forms rims on wadalite crystals. Chegemite-fluorchegemite, reinhardbraunsite-kumtyubeite, rondorfite, hydroxylellestadite, lakargiite, perovskite, kerimasite, elbrusite, ettringite-group minerals, hydrocalumite, bultfonteinite, and minerals of the katoite-grossular series are associated with chlorkyuygenite. Larnite, spurrite and galuskinite are noted as relics in Ca-humites. Chlorkyuygenite is colourless, occasionally with a greenish or yellowish tint, and the streak is white. The mineral is transparent with strong vitreous lustre, it is isotropic},

note = {7},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84906809607,

title = {Vapnikite Ca3UO6 - A new double-perovskite mineral from pyrometamorphic larnite rocks of the Jabel Harmun, Palestinian Autonomy, Israel},

author = { E.V. Galuskin and I.O. Galuskina and J. Kusz and T.M. Armbruster and K.M. Marzec and P. Dzierzanowski and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906809607&doi=10.1180%2fminmag.2014.078.3.07&partnerID=40&md5=1946b7128f08c0ded63cfcf380d54c20},

doi = {10.1180/minmag.2014.078.3.07},

issn = {0026461X},

year  = {2014},

date = {2014-01-01},

journal = {Mineralogical Magazine},

volume = {78},

number = {3},

pages = {571-581},

publisher = {Mineralogical Society},

abstract = {The new mineral species vapnikite, Ca3UO6, was found in larnite pyrometamorphic rocks of the Hatrurim Formation at Jabel Harmun in the Judean desert, Palestinian Autonomy, Israel. Vapnikite is an analogue of the synthetic ordered double-perovskite β-Ca3UO6 and is isostructural with the natural fluorperovskite - cryolite Na3AlF 6. Vapnikite Ca3UO6 (P21/n; Z = 2; a = 5.739(1); b = 5.951(1); c = 8.312(1) Å ; β = 90.4(1)°; V = 283.9(1) Å 3) forms yellow-brown xenomorphic grains with a strong vitreous lustre. Small grains up to 20-30 μm in size are wedged between larnite, brownmillerite and ye'elimite. Vapnikite has irregular fracture, cleavage and parting were not observed. The calculated density is 5.322 g cm-3, the microhardness is VHN25 = 534 kg mm -2 (mean of seven measurements) corresponding to the hardness of ∼5 on the Mohs scale. The crystal structure of vapnikite Ca 3UO6 differs from that of its synthetic analogue β-Ca3UO6 by having a larger degree of Ca, U disorder. Vapnikite formed at the high-temperature retrograde stage of pyrometamorphism when larnite rocks were altered by fluids/melts of high alkalinity. © 2014 The Mineralogical Society.},

note = {26},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84902471443,

title = {Harmunite CaFe2O4: A new mineral from the Jabel Harmun, West Bank, Palestinian Autonomy, Israel},

author = { I.O. Galuskina and Y. Vapnik and B. Lazic and T.M. Armbruster and M.N. Murashko and E.V. Galuskin},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902471443&doi=10.2138%2fam.2014.4563&partnerID=40&md5=2ee1ad84b78cab40c232f77610fa90c5},

doi = {10.2138/am.2014.4563},

issn = {0003004X},

year  = {2014},

date = {2014-01-01},

journal = {American Mineralogist},

volume = {99},

number = {5-6},

pages = {965-975},

publisher = {Walter de Gruyter GmbH},

abstract = {Harmunite, naturally occurring calcium ferrite CaFe2O 4, was discovered in the Hatrurim Complex of pyrometamorphic larnite rocks close to the Jabel Harmun, the Judean Desert, West Bank, Palestinian Autonomy, Israel. The new mineral occurs in larnite pebbles of the pseudo-conglomerate, the cement of which consists of intensely altered larnite-bearing rocks. Srebrodolskite, magnesioferrite, and harmunite are intergrown forming black porous aggregates to the central part of the pebbles. Larnite, fluorellestadite, ye'elimite, fluormayenite, gehlenite, ternesite, and calciolangbeinite are the main associated minerals. Empirical crystal chemical formula of harmunite from type specimen is as follows Ca1.013(Fe 31+957Al0 015Cr3+ 0.011Ti4+0.004 Mg0 003)Σ 1 993O4. Calculated density is 4.404 g/cm3, microhardness VHN50 is 655 kg/mm2. The Raman spectrum of harmunite is similar to that of the synthetic analog. Harmunite in hand specimen is black and under reflected plane-polarized light is light gray with red internal reflections. Reflectance data for the COM wavelengths vary from ∼22% (400 nm) to ∼18% (700 nm). The crystal structure of harmunite [Pnma; a = 9.2183(3); b = 3.0175(1); c = 10.6934(4) Å; Z = 4; V = 297.45(2) Å3], analogous to the synthetic counterpart, was refined from X-ray single-crystal data to R1 = 0.0262. The structure of CaFe2O4 consist of two symmetrically independent FeO 6 octahedra connected over common edges, forming double rutile-type 1∞[Fe2O6] chains. Four such double chains are further linked by common oxygen corners creating a tunnel-structure with large trigonal prismatic cavities occupied by Ca along [001]. The strongest diffraction lines are as follows [dhkl; (I)]: 2.6632(100), 2.5244(60), 2.6697(52), 1.8335(40), 2.5225(35), 2.2318(34), 1.8307(27), 1.5098 (19). Crystallization of harmunite takes place in the presence of sulfate melt.},

note = {49},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84888870704,

title = {Actinides in Geology, Energy, and the Environment Vorlanite, (CaU 6+)O4, from Jabel Harmun, Palestinian Autonomy, Israel},

author = { E.V. Galuskin and J. Kusz and T.M. Armbruster and I.O. Galuskina and K.M. Marzec and Y. Vapnik and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888870704&doi=10.2138%2fam.2013.4548&partnerID=40&md5=f34155a51067e3e3dc52a3ff2874d583},

doi = {10.2138/am.2013.4548},

issn = {0003004X},

year  = {2013},

date = {2013-01-01},

journal = {American Mineralogist},

volume = {98},

number = {11-12},

pages = {1938-1942},

publisher = {Walter de Gruyter GmbH},

abstract = {Vorlanite (CaU6+)O4 [Fm3m; a = 5.3647(9) Å; V = 154.40(4) Å3; Z = 2] was found in larnite pyrometamorphic rocks of the Hatrurim formation at the Jabel Harmun locality, Judean Desert, Palestinian Autonomy. Vorlanite crystals from these larnite rocks are dark-gray with greenish hue in transmitted light. This color in transmitted light is in contrast to dark-red vorlanite [Fm3m; a = 5.3813(2) Å; V = 155.834(10)Å3; Z = 2] from the type locality Upper Chegem caldera, Northern Caucasus. Heating above 750 °C of dark-gray vorlanite from the Jabel Harmun, as well as dark-red vorlanite from Caucasus, led to formation of yellow trigonal uranate CaUO4. The unusual color of vorlanite from Jabel Harmun is assumed to be related to small impurities of tetravalent uranium.},

note = {18},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84874600222,

title = {Shulamitite Ca3TiFe3+AlO8 - A new perovskite-related mineral from Hatrurim Basin, Israel},

author = { V.V. Sharygin and B. Lazic and T.M. Armbruster and M.N. Murashko and R. Wirth and I.O. Galuskina and E.V. Galuskin and Y. Vapnik and S.N. Britvin and A.M. Logvinova},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874600222&doi=10.1127%2f0935-1221%2f2013%2f0025-2259&partnerID=40&md5=678f5e5f6a7ac3c917ae8ceb78eaceaa},

doi = {10.1127/0935-1221/2013/0025-2259},

issn = {09351221},

year  = {2013},

date = {2013-01-01},

journal = {European Journal of Mineralogy},

volume = {25},

number = {1},

pages = {97-111},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Shulamitite, ideally Ca3TiFe3+AlO8, is a mineral intermediate between perovskite CaTiO3 and brownmillerite Ca2(Fe;Al)2O5. It was discovered as a major mineral in a high-temperature larnite-mayenite rock from the Hatrurim Basin, Israel. Shulamitite is associated with larnite, F-rich mayenite, Cr-containing spinel, ye'elimite, fluorapatite, and magnesioferrite, and retrograde phases (portlandite; hematite; hillebrandite; afwillite; foshagite and katoite). The mineral forms reddish brown subhedral grains or prismatic platelets up to 200 mm and intergrowths up to 500 mm. The empirical formula of the holotype shulamitite (mean of 73 analyses) is (Ca2.992Sr 0.007LREE0.007)(Ti0.981Zr 0.014Nb0.001)(Fe3+0.947Mg 0.022Cr0.012Fe2+0.012Mn 0.001)(Al0.658Fe3+0.288Si 0.054)O8. The X-ray diffraction powder-pattern (MoKa-radiation) shows the strongest lines {d [Å](Iobs)} at: 2.677(100), 2.755(40), 1.940(40), 11.12(19), 1.585(17), 1.842(16), 1.559(16), 3.89 (13), 1.527(13). The unit-cell parameters and space group are: a = 5.4200(6)},

note = {37},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84874445247,

title = {Crystal chemistry and hydrogen bonding of rustumite Ca10(Si 2O7)2(SiO4)(OH)2Cl 2 with variable OH, Cl, F},

author = { F. Gfeller and T.M. Armbruster and E.V. Galuskin and I.O. Galuskina and B. Lazic and V.B. Savelyeva and A.E. Zadov and P. Dzierzanowski and V.M. Gazeev},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874445247&doi=10.2138%2fam.2013.4257&partnerID=40&md5=89496b6fcf2d73c8a89d220f6f2ba7c2},

doi = {10.2138/am.2013.4257},

issn = {0003004X},

year  = {2013},

date = {2013-01-01},

journal = {American Mineralogist},

volume = {98},

number = {2-3},

pages = {493-500},

publisher = {Walter de Gruyter GmbH},

abstract = {Three samples of the skarn mineral rustumite Ca10(Si 2O7)2(SiO4)(OH)2Cl 2, space group C2/c, a ≈7.6, b ≈ 18.5, c ≈ 15.5 Å, β ≈ 104°, with variable OH, Cl, F content were investigated by electron microprobe, single-crystal X-ray structure refinements, and Raman spectroscopy. "Rust1LCl" is a low chlorine rustumite Ca10 (Si2O7)2(SiO4)(OH 1.88F0.12)(Cl1.28;OH0.72) from skarns associated with the Rize batholith near Ikizedere, Turkey. "Rust2F" is a F-bearing rustumite Ca10 (Si 2O7)2(SiO4)(OH1.13F 0.87)(Cl1.96OH0.04) from xenoliths in ignimbrites of the Upper Chegem Caldera, Northern Caucasus, Russia. "Rust3LClF" represents a low-Cl, F-bearing rustumite Ca10 (Si2O7)2[(SiO4)0.87(H 4O4)0.13](OH1.01F0.99)(Cl 1.00 OH1.00) from altered merwinite skarns of the Birkhin massif, Baikal Lake area, Eastern Siberia, Russia. Rustumite from Birkhin massif is characterized by a significant hydrogarnet-like or fluorine substitution at the apices of the orthosilicate group, leading to specific atomic displacements. The crystal structures including hydrogen positions have been refined from single-crystal X-ray data to R1 = 0.0205 (Rust1LCl)},

note = {2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84863526296,

title = {Trabzonite, Ca 4[Si 3O 9(OH)]OH: Crystal structure, revised formula, new occurrence and relation to killalaite},

author = { T.M. Armbruster and B. Lazic and I.O. Galuskina and E.V. Galuskin and E. Gnos and K.M. Marzec and V.M. Gazeev},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863526296&doi=10.1180%2fminmag.2012.076.3.02&partnerID=40&md5=d878756ff2df9e095c987f407eb570b7},

doi = {10.1180/minmag.2012.076.3.02},

issn = {0026461X},

year  = {2012},

date = {2012-01-01},

journal = {Mineralogical Magazine},

volume = {76},

number = {3},

pages = {455-472},

abstract = {The crystal structure of the rare skarn mineral trabzonite, Ca 4[Si 3O 9(OH)]OH, from the type locality near Ikizdere, Turkey and from the Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia has been solved and refined using single-crystal X-ray data. This shows that the chemical formula should be modified from Ca 4(Si 3O 10)̇2H 2O, reported in the original trabzonite description, to an OH-bearing composition. The crystal structure, which contains Si 3O 10 trimers embedded in a framework of CaO 6-8 polyhedra, has orthorhombic symmetry, space group Ama2},

note = {4},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84863508970,

title = {A reinvestigation of mayenite from the type locality, the Ettringer Bellerberg volcano near Mayen, Eifel district, Germany},

author = { E.V. Galuskin and J. Kusz and T.M. Armbruster and R. Bailau and I.O. Galuskina and B. Ternes and M.N. Murashko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863508970&doi=10.1180%2fminmag.2012.076.3.18&partnerID=40&md5=8212670509e475e20ac1b89eb2ee7789},

doi = {10.1180/minmag.2012.076.3.18},

issn = {0026461X},

year  = {2012},

date = {2012-01-01},

journal = {Mineralogical Magazine},

volume = {76},

number = {3},

pages = {707-716},

abstract = {New electron-microprobe analyses of mayenite from the Ettringer Bellerberg volcano near Mayen in the Eifel district, Germany have high Cl contents and Raman spectroscopy indicates the presence of OH groups. Neither of these components is included in the generally accepted chemical formula, Ca 12Al14O33. A refinement of the crystal structure by single-crystal X-ray methods reveals a previously unrecognized partial substitution. The O2 site which forms one of the apices of an AlO 4 tetrahedron (with 3 × O1 sites) is replaced by 3 × O2a sites, which change the coordination of the central Al atom from tetrahedral to octahedral. This substitution is related to partial hydration of Ca 12Al14O32Cl2 according to the isomorphic scheme (O2- + Cl-) → 3(OH)-. The revised composition of Eifel mayenite is best described by the formula Ca12Al14O32-xCl2-x(OH)3x (x ∼0.75); the original formula, Ca12Al14O 33, is inadequate. The analysed mineral can be considered to consist of endmember Ca12Al14O32Cl2 (62.5 mol.%) and endmember Ca12Al14O30(OH) 6 (37.5 mol.%). © 2012 Mineralogical Society.},

note = {20},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84868598586,

title = {Edgrewite Ca9(SiO4)4F2- hydroxyledgrewite Ca9(SiO4)4(OH)2, a new series of calcium humite-group minerals from altered xenoliths in the ignimbrite of Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia},

author = { E.V. Galuskin and B. Lazic and T.M. Armbruster and I.O. Galuskina and N.N. Pertsev and V.M. Gazeev and R. Włodyka and M. Dulski and P. Dzierzanowski and A.E. Zadov and L.S. Dubrovinsky},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868598586&doi=10.2138%2fam.2012.4161&partnerID=40&md5=5b0ee13a0455086e5b1b6b9a64290dbc},

doi = {10.2138/am.2012.4161},

issn = {0003004X},

year  = {2012},

date = {2012-01-01},

journal = {American Mineralogist},

volume = {97},

number = {11-12},

pages = {1998-2006},

publisher = {Walter de Gruyter GmbH},

abstract = {Members of the edgrewite Ca9(SiO4)4F 2-hydroxyledgrewite Ca9(SiO4)4(OH)2 series, structural analogues of clinohumite-hydroxylclinohumite series, Mg 9(SiO4)4(F;OH)2, were discovered in xenoliths of carbonate-silicate rock altered to skarn within ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. The new minerals occur sparingly in zones containing bultfonteinite, hillebrandite, jennite, and chegemite, as well as rare relics of larnite and rondorfite enclosed in a matrix of hydroxylellestadite. Edgrewite and hydroxyledgrewite are largely altered to jennite in places with admixed zeophyllite and trabzonite, and are preserved as elongate relics mostly 0.1-0.4 mm long in the central part of atoll-like pseudomorphs. The new minerals form a solid-solution series Ca9(SiO4)4(F;OH)2, in which the content of the edgrewite end-member Ca9(SiO4)4F2 ranges from 74% (F = 3.64 wt%) to 31% (F = 1.52 wt%). Structure refinement of crystals containing 51% and 37% of the edgrewite end-member gave, respectively},

note = {12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84860318175,

title = {Pavlovskyite Ca8(SiO4)2(Si3O10): A new mineral of altered silicate-carbonate xenoliths from the two Russian type localities, Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus},

author = { E.V. Galuskin and F. Gfeller and V.B. Savelyeva and T.M. Armbruster and B. Lazic and I.O. Galuskina and D.M. Többens and A.E. Zadov and P. Dzierzanowski and N.N. Pertsev and V.M. Gazeev},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860318175&doi=10.2138%2fam.2012.3970&partnerID=40&md5=d2f130a0be1c5dfca3281d50b4097ae8},

doi = {10.2138/am.2012.3970},

issn = {Walter de Gruyter GmbH},

year  = {2012},

date = {2012-01-01},

journal = {American Mineralogist},

volume = {97},

number = {4},

pages = {503-512},

publisher = {Galuskin, E.V.; Department of Geochemistry, Bedzinska 60, 41-200 Sosnowiec, Poland; email: evgeny.galuskin@us.edu.pl},

abstract = {The new mineral pavlovskyite Ca8(SiO4) 2(Si3O10) forms rims together with dellaite Ca6(Si2O7)(SiO4)(OH)2 around galuskinite Ca7(SiO4)3CO3 veins cutting calcio-olivine skarns in the Birkhin gabbro massif. In addition, skeletal pavlovskyite occurs in cuspidine zones of altered carbonate xenoliths in the ignimbrites of the Upper Chegem caldera (North Caucasus). The synthetic analog of pavlovskyite has been synthesized before and is known from cement-like materials. Isotypic to pavlovskyite is the synthetic germanate analog Ca 8(GeO4)2(Ge3O10). The crystal structure of pavlovskyite, space group Pbcn},

note = {12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-79959942479,

title = {Chlorine content and crystal chemistry of dellaite from the birkhin gabbro massif, eastern Siberia, Russia},

author = { T.M. Armbruster and B. Lazic and F. Gfeller and E.V. Galuskin and I.O. Galuskina and V.B. Savelyeva and A.E. Zadov and N.N. Pertsev and P.D. Anowski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959942479&doi=10.1180%2fminmag.2011.075.2.379&partnerID=40&md5=710b14b105e2d621c370609625d9bc29},

doi = {10.1180/minmag.2011.075.2.379},

issn = {0026461X},

year  = {2011},

date = {2011-01-01},

journal = {Mineralogical Magazine},

volume = {75},

number = {2},

pages = {379-394},

abstract = {Dellaite crystals of close to end-member composition, Ca 6(Si2O7)(SiO4)(OH)2, and with ∼1.5 wt.% Cl, yielding Ca6(Si2O 7)(SiO4)(OH)1.75Cl0.25 have been found in skarns within the gabbroid rocks of the Birkhin complex (Eastern Siberia; Russia). The greatest Cl content analysed in a dellaite domain in this skarn is 5.2 wt.% Cl corresponding to 0.8 Cl p.f.u. Dellaite occurs in altered merwinite-larnite-bredigite-gehlenite skarns and also in calcio-olivine skarns with residual larnite. The crystal structures of Cl-free and Cl-bearing (∼1.5 wt.% Cl) dellaite have been refined, including hydrogen positions, from single crystal X-ray data to R 1 = 3.7 and 3.8%, respectively. In addition, both dellaite varieties were studied by Raman spectroscopy indicating stronger hydrogen bonds for the Cl-bearing sample, which agrees with the structural data. Cl is strongly selective and enriches at one (O6) of the two OH positions allowing for the formation of a stronger hydrogen bond O8-H8•••Cl6 compared to O8-H8•••O6. Raman spectra of the domain with ∼0.8 Cl p.f.u. confirm the general enhancement of a low-frequency band in the OH range suggesting the dominance of the O-H•••Cl hydrogen bond systems. Dellaite and killalaite, Ca 3.2(H0.6Si2O7)(OH), have related modular structures, differentiated only by the Si2O7 units in killalaite and alternating Si2O7 and SiO4 units in dellaite. The similarity in cell dimensions and chemical composition suggests that trabzonite, Ca4Si3O10• 2H2O, with Si3O10 trimers also belongs to the same family of structures. © 2011 Mineralogical Society.},

note = {6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-83655181256,

title = {Rusinovite, Ca10(Si2O7)3Cl 2: A new skarn mineral from the Upper Chegem caldera, Kabardino-Balkaria, Northern Caucasus, Russia},

author = { E.V. Galuskin and I.O. Galuskina and B. Lazic and T.M. Armbruster and A.E. Zadov and T. Krzykawski and K. Banasik and V.M. Gazeev and N.N. Pertsev},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-83655181256&doi=10.1127%2f0935-1221%2f2011%2f0023-2160&partnerID=40&md5=48d5815aea1bfd9c8e07dc00f712936d},

doi = {10.1127/0935-1221/2011/0023-2160},

issn = {09351221},

year  = {2011},

date = {2011-01-01},

journal = {European Journal of Mineralogy},

volume = {23},

number = {5},

pages = {837-844},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {Rusinovite, Ca10(Si2O7)3Cl 2, was discovered in an altered carbonate-silicate xenolith enclosed in ignimbrites of the Upper Chegem volcanic caldera. The mineral is named after Vladimir Leonidovich Rusinov (1935-2007), a Russian petrologist and expert in the field of thermodynamics of non-equilibriummineral systems. A synthetic analogue of rusinovite is also known. The new mineral has anODstructure of which only the average structure could be determined based on strong and sharp reflections recorded by single-crystal X-ray diffraction: space group Cmcm},

note = {16},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-79251561540,

title = {Vorlanite (CaU6+)O4 - A new mineral from the Upper Chegem caldera, Kabardino-Balkaria, Northern Caucasus, Russia},

author = { E.V. Galuskin and T.M. Armbruster and I.O. Galuskina and B. Lazic and A. Winiarski and V.M. Gazeev and P. Dzierzanowski and A.E. Zadov and N.N. Pertsev and R. Wrzalik and A.G. Gurbanov and J. Janeczek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79251561540&doi=10.2138%2fam.2011.3610&partnerID=40&md5=cde7b101355c40a47494672affd12af8},

doi = {10.2138/am.2011.3610},

issn = {0003004X},

year  = {2011},

date = {2011-01-01},

journal = {American Mineralogist},

volume = {96},

number = {1},

pages = {188-196},

publisher = {Walter de Gruyter GmbH},

abstract = {The new mineral vorlanite, (CaU6+)O4},

note = {37},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-77953486926,

title = {Eringaite, Ca3Sc2(SiO4)3, a new mineral of the garnet group},

author = { I.O. Galuskina and E.V. Galuskin and B. Lazic and T.M. Armbruster and P. Dzierzanowski and K. Prusik and R. Wrzalik},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953486926&doi=10.1180%2fminmag.2010.074.2.365&partnerID=40&md5=e7d488e6785a56968253e43ce08ad3e3},

doi = {10.1180/minmag.2010.074.2.365},

issn = {0026461X},

year  = {2010},

date = {2010-01-01},

journal = {Mineralogical Magazine},

volume = {74},

number = {2},

pages = {365-373},

abstract = {Eringaite, Ca3Sc2(SiO4)3, a new mineral of the garnet group, is an accessory mineral in metasomatic rodingite-like rocks from the Wiluy River, Sakha-Yakutia Republic, Russia. Eringaite forms regular growth zones and irregular spots in complex garnet crystals containing a kimzeyite core. An electron back-scatter diffraction pattern with an excellent match to a garnet model with a = 12.19 Å was obtained for a grain with the largest Sc2O3 content having the crystal chemical formula (Ca2.98Y0.01Mg 0.01)Σ3(Sc0.82Ti0.44 4-Fe0.303+Zr0.21Mg 0.10Al0.09Cr0.083-Fe 0.052+V0.013+ Σ2.01(Si2.48Al0.30Fe0.22 3-)Σ3O12. Eringaite is light brown to yellow with a creamy white streak. The crystals are transparent with a vitreous lustre. The calculated density of eringaite is 3.654 g cm-3. The following main modes of the Raman spectrum are characteristic of eringaite: 335; 511; 735; 880 and 937 cm . The strongest lines of the calculated powder diffraction data are as follows [(hkl) dhkl (I)] (400) 3.064 (69); (420) 2.740 (100); (422) 2.502 (68); (640) 1.670 (30); (642) 1.638 (82); (840) 1.370 (20); (842) 1.137 (19); (10.4.2) 1.119 (29). © 2010 The Mineralogical Society.},

note = {12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-78651261966,

title = {Oxyvanite, V3O5, a new mineral species and the oxyvanite-berdesinskiite V2TiO5 series from metamorphic rocks of the Slyudyanka Complex, southern Baikal region},

author = { L.Z. Reznitsky and E.V. Sklyarov and T.M. Armbruster and Z.F. Ushchapovskaya and E.V. Galuskin and Y.S. Polekhovsky and I.G. Barash},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-78651261966&doi=10.1134%2fS1075701510070068&partnerID=40&md5=0c1c32806327704c50280be67550db4d},

doi = {10.1134/S1075701510070068},

issn = {10757015},

year  = {2010},

date = {2010-01-01},

journal = {Geology of Ore Deposits},

volume = {52},

number = {7},

pages = {574-583},

publisher = {Maik Nauka-Interperiodica Publishing},

abstract = {Oxyvanite has been identified as an accessory mineral in Cr-V-bearing quartz-diopside meta-morphic rocks of the Slyudyanka Complex in the southern Baikal region, Russia. The new mineral was named after constituents of its ideal formula (oxygen and vanadium). Quartz, Cr-V-bearing tremolite and micas, calcite, clinopyroxenes of the diopside-kosmochlor-natalyite series, Cr-bearing goldmanite, eskolaite-karelianite dravite-vanadiumdravite, V-bearing titanite, ilmenite, and rutile, berdesinskiite, schreyerite, plagioclase, scapolite, barite, zircon, and unnamed U-Ti-V-Cr phases are associated minerals. Oxyvanite occurs as anhedral grains up to 0.1-0.15 mm in size, without visible cleavage and parting. The new mineral is brittle, with conchoidal fracture. Observed by the naked eye, the mineral is black, with black streak and resinous luster. The microhardness (VHN) is 1064-1266 kg/mm2 (load 30 g), and the mean value is 1180 kg/mm2. The Mohs hardness is about 7.0-7.5. The calculated density is 4.66(2) g/cm3. The color of oxyvanite is pale cream in reflected light, without internal reflections. The measured reflectance in air is as follows (λ; nm-R; %): 440-17.8; 460-18; 480-18.2; 520-18.6; 520-18.6; 540-18.8; 560-18.9; 580-19; 600-19.1; 620-19.2; 640-19.3; 660-19.4; 680-19.5; 700-19.7. Oxyvanite is monoclinic, space group C2/c; the unit-cell dimensions are a = 10.03(2)},

note = {6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-77957204367,

title = {Pertsevite-(OH), a new mineral in the pertsevite series, Mg 2(BO3)1-x(SiO4)x(F,OH) 1-x (x < 0.5), from the Snezhnoye deposit in Sakha-Yakutia Republic, Russia},

author = { I.O. Galuskina and L. Ottolini and M. Kadiyski and T.M. Armbruster and E.V. Galuskin and P. Dzierzanowski and A. Winiarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957204367&doi=10.2138%2fam.2010.3457&partnerID=40&md5=f3d0118c21e1e755962cf6108de26305},

doi = {10.2138/am.2010.3457},

issn = {0003004X},

year  = {2010},

date = {2010-01-01},

journal = {American Mineralogist},

volume = {95},

number = {7},

pages = {953-958},

publisher = {Walter de Gruyter GmbH},

abstract = {Pertsevite-(OH), end-member formula Mg2(BO3)(OH), is a new mineral found in a ludwigite-kotoite magnesian skarn from the Snezhnoye deposit in Sakha-Yakutia Republic, Russia. The Commission on New Minerals, Nomenclature and Classification, IMA (IMA 2008-060) has approved the mineral and the mineral name. Moreover, the Chairman of the CNMNC agreed to renaming pertsevite to pertsevite-(F). The two minerals constitute the pertsevite series with the general formula Mg2(BO3)1-x(SiO 4)x(OH;F)1-x, where x = 0.1-0.3. Pertsevite-(OH) is biaxial: 2Vz = 55-65°(meas)},

note = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-70249120389,

title = {Structural investigation of low-symmetry vesuvianite collected from Tojyo, Hiroshima, Japan: Implications for hydrogarnet-like substitution},

author = { M. Ohkawa and T.M. Armbruster and E.V. Galuskin},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70249120389&doi=10.2465%2fjmps.080507&partnerID=40&md5=c6424f8463eb21f9d02ef80d577ebaf0},

doi = {10.2465/jmps.080507},

issn = {13456296},

year  = {2009},

date = {2009-01-01},

journal = {Journal of Mineralogical and Petrological Sciences},

volume = {104},

number = {2},

pages = {69-76},

abstract = {The crystal structure of a unique type of vesuvianite with the space group P4/n [a = 15.576(2); c = 11.835(2) Å] formed by the retrograde alteration of gehlenite in high-temperature skarn at Kushiro (Tojyo; Shobara Hiroshima) southwestern Japan, is determined by single-crystal X-ray diffraction (R1 = 3.63%). Significant vacancies (29%) occur only on one of the two pseudo-equivalent Z1 sites (Z1b). In addition, the Si-O distance at the Z1b site remarkably increases up to 1.707(3) Å, indicating the existence of a hydrogarnet-like substitution, while Z1a, the other pseudo-equivalent Si site, has only 5% vacancies associated with an Si-O distance of 1.636(3) Å. The total refined Si site occupancy of 17.7 atoms per formula unit is in excellent agreement with the results of electron-microprobe analyses.},

note = {7},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-80053315950,

title = {X-ray structural investigation of the oxyvanite (V3O 5) - Berdesinskiite (V2TiO5) series: V 4+ substituting for octahedrally coordinated Ti4+},

author = { T.M. Armbruster and E.V. Galuskin and L.Z. Reznitsky and E.V. Sklyarov},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80053315950&doi=10.1127%2f0935-1221%2f2009%2f0021-1951&partnerID=40&md5=4de1b8d9f7452667f69933fffce84c59},

doi = {10.1127/0935-1221/2009/0021-1951},

issn = {09351221},

year  = {2009},

date = {2009-01-01},

journal = {European Journal of Mineralogy},

volume = {21},

number = {4},

pages = {885-891},

publisher = {Gebruder Borntraeger Verlagsbuchhandlung},

abstract = {The crystal structures of three different solid-solution members between the new mineral oxyvanite (V3O5) - and berdesinskiite (V2TiO5) from a quartzite rock in the Pereval marble quarry of the Sludyanka complex, south of Lake Baikal (Russia), have been refined in space group C2/c (a ≈ 10.0; b ≈ 5.0; c ≈ 7.0 Å; β ≈ 111°) from X-ray single-crystal diffraction-data. The composition of the studied crystals, determined by electron-microprobe analyses, is: (V 1.673+Cr0.333+)(V 0.594+Ti0.414+)O5, (V1.673+Cr0.333+)(V 0.464+Ti0.544+)O5, and (V1.383+Cr0.613+)(V 0.244+Ti0.764+)O5. The common structure type of oxyvanite and berdesinskiite can be described by hexagonal closest oxygen packing with 3/5 of the octahedral voids occupied. Site-occupancy refinements support previous studies on synthetic V 2Ti05 and V305 indicating that a strongly distorted octahedrally coordinated site, forming pairs of face-sharing octahedra, is 1:1 occupied by M3+ and M4+ (Ti 4+; V4+) whereas a more regular octahedral site is only occupied by M3+ (V; Cr).},

note = {12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-76649117791,

title = {Kumtyubeite Ca5(SiO4)2F2-A new calcium mineral of the humite group from Northern Caucasus, Kabardino-Balkaria, Russia},

author = { I.O. Galuskina and B. Lazic and T.M. Armbruster and E.V. Galuskin and V.M. Gazeev and A.E. Zadov and N.N. Pertsev and L. Jeżak and R. Wrzalik and A.G. Gurbanov},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-76649117791&doi=10.2138%2fam.2009.3256&partnerID=40&md5=878d5cfb6747afb61db25e458c99aa97},

doi = {10.2138/am.2009.3256},

issn = {0003004X},

year  = {2009},

date = {2009-01-01},

journal = {American Mineralogist},

volume = {94},

number = {10},

pages = {1361-1370},

publisher = {Walter de Gruyter GmbH},

abstract = {Kumtyubeite, Ca5(SiO4)2F2-the fluorine analog of reinhardbraunsite with a chondrodite-type structure - is a rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. The new mineral occurs in spurrite-rondorfite-ellestadite zones of skarn. The empirical formula of kumtyubeite from the holotype sample is Ca 5(Si1.99Ti0.01)∑2O 8(F1.39OH0.61)∑2. Single-crystal X-ray data were collected for a grain of Ca5(SiO4) 2(F1.3OH0.7) composition, and the structure refinement, including a partially occupied H position, converged to R = 1.56%: monoclinic, space group P21/a},

note = {18},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-70449570973,

title = {Chegemite Ca7(SiO4)3(OH)2 - A new humite-group calcium mineral from the Northern Caucasus, Kabardino-Balkaria, Russia},

author = { E.V. Galuskin and V.M. Gazeev and B. Lazic and T.M. Armbruster and I.O. Galuskina and A.E. Zadov and N.N. Pertsev and R. Wrzalik and P. Dzierzanowski and A.G. Gurbanov and G. Bzowska},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449570973&doi=10.1127%2f0935-1221%2f2009%2f0021-1962&partnerID=40&md5=21afe4e84b74c866489b16b6959a1e74},

doi = {10.1127/0935-1221/2009/0021-1962},

issn = {09351221},

year  = {2009},

date = {2009-01-01},

journal = {European Journal of Mineralogy},

volume = {21},

number = {5},

pages = {1045-1059},

publisher = {E. Schweizerbart'sche Verlagsbuchhandlung},

abstract = {The new mineral chegemite Ca7(SiO4) 3(OH)2 (Pbnm; Z = 4)},

note = {30},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-58749103530,

title = {Batisivite, V8Ti6[Ba(Si2O)] O28, a new mineral species from the derbylite group},

author = { L.Z. Reznitsky and E.V. Sklyarov and T.M. Armbruster and E.V. Galuskin and Z.F. Ushchapovskaya and Y.S. Polekhovsky and N.S. Karmanov and A.A. Kashaev and I.G. Barash},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-58749103530&doi=10.1134%2fS1075701508070076&partnerID=40&md5=874b3ff4585a8066f9708c0cf7bedc5b},

doi = {10.1134/S1075701508070076},

issn = {10757015},

year  = {2008},

date = {2008-01-01},

journal = {Geology of Ore Deposits},

volume = {50},

number = {7},

pages = {565-573},

publisher = {Maik Nauka-Interperiodica Publishing},

abstract = {Batisivite has been found as an accessory mineral in the Cr-V-bearing quartz-diopside metamorphic rocks of the Slyudyanka Complex in the southern Baikal region, Russia. A new mineral was named after the major cations in its ideal formula (Ba; Ti; Si; V). Associated minerals are quartz, Cr-V-bearing diopside and tremolite; calcite; schreyerite; berdesinskiite; ankangite; V-bearing titanite; minerals of the chromite-coulsonite, eskolaite-karelianite, dravite-vanadiumdravite, and chernykhite-roscoelite series; uraninite; Cr-bearing goldmanite; albite; barite; zircon; and unnamed U-Ti-V-Cr phases. Batisivite occurs as anhedral grains up to 0.15-0.20 mm in size, without visible cleavage and parting. The new mineral is brittle, with conchoidal fracture. Observed by the naked eye, the mineral is black and opaque, with a black streak and resinous luster. Batisivite is white in reflected light. The microhardness (VHN) is 1220-1470 kg/mm2 (load is 30 g), the mean value is 1330 kg/mm2. The Mohs hardness is near 7. The calculated density is 4.62 g/cm3. The new mineral is weakly anisotropic and bireflected. The measured values of reflectance are as follows (λ; nm - R′max/R′min): 440-17.5/17.0; 460-17.3/16.7; 480-17.1/16.5; 500-17.2/16.6; 520-17.3/16.7; 540-17.4/16.8; 560-17.5/16.8; 580-17.6/16.9; 600-17.7/17.1; 620-17.7/17.1; 640-17.8/17.1; 660-17.9/17.2; 680-18.0/17.3; 700-18.1/17.4. Batisivite is triclinic, space group P1; the unit-cell dimensions are: a = 7.521(1) Å},

note = {3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-58049104722,

title = {Lakargiite CaZrO3: A new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia},

author = { E.V. Galuskin and V.M. Gazeev and T.M. Armbruster and A.E. Zadov and I.O. Galuskina and N.N. Pertsev and P. Dzierzanowski and M. Kadiyski and A.G. Gurbanov and R. Wrzalik and A. Winiarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-58049104722&doi=10.2138%2fam.2008.2900&partnerID=40&md5=a0e0d96716e5c101df065603a28993a4},

doi = {10.2138/am.2008.2900},

issn = {0003004X},

year  = {2008},

date = {2008-01-01},

journal = {American Mineralogist},

volume = {93},

number = {11-12},

pages = {1903-1910},

publisher = {Mineralogical Society of America},

abstract = {Lakargiite CaZrO3 - the zirconium analog of perovskite [Pbnm; a = 5.556(1); b = 5.715(1); c =7.960(1) Å; V 252.7(1) Å 3; Z = 4] - was discovered as an accessory mineral in high-temperature skarns in carbonate-silicate rocks occurring as xenoliths in ignimbrites of the Upper-Chegem (Verkhniy Chegem) volcanic structure, the North Caucasus, Kabardino-Balkaria, Russia. Lakargiite forms pseudo-cubic crystals up to 30-35 μm in size and aggregates up to 200 μm. Lakargiite is associated with spurrite, larnite, calcio-olivine, calcite, cuspidine, rondorfite, reinhardbraunsite, wadalite, perovskite, and minerals of the ellestadite group. The new perovskite mineral belongs to the ternary solid solution CaZrO3-CaTiO3- CaSnO3 with a maximum CaZrO3 content of ca. 93%, maximum CaTiO3 content of 22%, and maximum CaSnO3 content of 20%. Significant impurities are Sc, Cr, Fe, Ce, La, Hf, Nb, U, and Th. Raman spectra of lakargiite are similar to those of the synthetic phase Ca(ZrTi)O3 with strong bands at 352, 437, 446, 554, and 748 cm-1. Lakargiite crystallized under sanidinite-facies conditions of contact metamorphism characterized by very high temperatures and low pressures.},

note = {58},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-56849092088,

title = {A new natural phase in the system Mg2SiO4-Mg2 BO3F-Mg2 BO3(OH): Composition, paragenesis and structure of OH-dominant pertsevite},

author = { I.O. Galuskina and M. Kadiyski and T.M. Armbruster and E.V. Galuskin and N.N. Pertsev and P. Dzierzanowski and R. Wrzalik},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-56849092088&doi=10.1127%2f0935-1221%2f2008%2f0020-1821&partnerID=40&md5=8db1ba660e11060044de289c3d971dcb},

doi = {10.1127/0935-1221/2008/0020-1821},

issn = {09351221},

year  = {2008},

date = {2008-01-01},

journal = {European Journal of Mineralogy},

volume = {20},

number = {5},

pages = {951-964},

publisher = {E. Schweizerbart'sche Verlagsbuchhandlung},

abstract = {Si-bearing, OH-dominant pertsevite Mg2(BO3)1-x (SiO4)x (OH;F)1-x (x = 0.2-0.3) from contact-metasomatic kotoitites and kotoite marbles at East Verkhoyan'ye region (northern Siberia) and at Gonochan, Dzhugdzhur Ridge (Russian Far East) was studied by electron microprobe (EMP) techniques, including boron analyses, and Raman spectroscopy. At both localities borate mineral-assemblages are very similar. Minerals associated with OH-dominant pertsevite (East Verkhoyan'ye region) are ludwigite, kotoite, szaibelyite, REE-bearing sakhaite, olivine and minerals of the humite group. Humite-group minerals and olivine were found to be slightly B2O3-bearing (ca. 1 wt.%). OH-dominant pertsevite, described here for the first time, formed at the expense of kotoite and hydroxylclinohumite and has a rather heterogeneous composition with respect to Si, B, F and OH between different grains and even within individual grains. The crystal structure of one selected grain of OH-dominant pertsevite (Mg1.95 Fe0.04Mn0.01) (BO3)0.75 (SiO4)0.25 [(OH)0.45 F0.30], space group Pnma},

note = {9},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-56849089200,

title = {Batisivite, the first silicate related to the derbylite-hemloite group},

author = { T.M. Armbruster and M. Kadiyski and L.Z. Reznitsky and E.V. Sklyarov and E.V. Galuskin},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-56849089200&doi=10.1127%2f0935-1221%2f2008%2f0020-1800&partnerID=40&md5=2067ef04d8bb5d84961c48a12160aa60},

doi = {10.1127/0935-1221/2008/0020-1800},

issn = {09351221},

year  = {2008},

date = {2008-01-01},

journal = {European Journal of Mineralogy},

volume = {20},

number = {5},

pages = {975-981},

publisher = {E. Schweizerbart'sche Verlagsbuchhandlung},

abstract = {The crystal structure (space group P1̄; a = 7.5208(4); b = 7.6430(4); c = 9.5724(4) Å; α = 110.204(3); β = 103.338(6); γ = 98.281(7)°; V = 487.14(7) Å3; Z = 1) of the new mineral batisivite, (V; Cr)8Ti6[Ba (Si2O7)]O22, has been determined and refined from single-crystal X-ray data to R = 2.59%. Strong and sharp X-ray reflections define a C-centred monoclinic lattice with a = 4.9878(3)},

note = {8},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-39749115793,

title = {The modular structure of dovyrenite, Ca6Zr[Si2 O7]2(OH)4: Alternate stacking of tobermorite and rosenbuschite-like units},

author = { M. Kadiyski and T.M. Armbruster and E.V. Galuskin and N.N. Pertsev and A.E. Zadov and I.O. Galuskina and R. Wrzalik and P. Dzierzanowski and E.V. Kislov},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-39749115793&doi=10.2138%2fam.2008.2669&partnerID=40&md5=8c1be6c1ada7bd320d9bbbae33e5ce0e},

doi = {10.2138/am.2008.2669},

issn = {0003004X},

year  = {2008},

date = {2008-01-01},

journal = {American Mineralogist},

volume = {93},

number = {2-3},

pages = {456-462},

publisher = {Mineralogical Society of America},

abstract = {The average structure, space group Pnnm [subcell: A = 5.666(16); B = 18.844(5); C = 3.728(11) Å; V=398.0(2) Å3; Z = 1], of the new mineral dovyrenite Ca6Zr [Si2O7]2(OH)4 has been refined from single-crystal X-ray data to R = 7.97%. The modular structure of dovyrenite is build by alternate stacking of Ca-polyhedral layers characteristic of the tobermorite structure and octahedral layers with attached disilicate groups known from the rosenbuschite group of minerals. No indications of ordered polytypes were detected for the potential OD-structure. Either the small crystal size producing only weak diffraction intensities did not allow detecting diffuse diffraction features (or "super-structure" reflections) or the structure is build by disordered stacks of OD layers. Nevertheless, the resolved average structure allowed unraveling the possible order patterns within the rosenbuschite-like octahedral layers. The key for understanding the polytypic character of this structure is the short periodicity of the tobermorite-like Ca polyhedral layer of only 3.73 Å along c, whereas the periodicity of the attached rosenbuschite-like octahedral layer is doubled. In dovyrenite Ca occurs in sixfold-, sevenfold-, and eightfold-coordination. The octahedral Ca site is only half occupied and may reveal additional vacancies, which must be charge balanced by disordered OH-groups replacing O. A corresponding modular structure with the same subunits but different composition and without octahedral vacancies exists for rinkite (Ti;Nb;Al;Zr)(Na; Ca)3(Ca; Ce)4[Si2O7]2 (O;F)4, which has hitherto been considered as heterophyllosilicate.},

note = {9},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-34249850483,

title = {The crystal structure of Si-deficient, OH-substituted, boron-bearing vesuvianite from the Wiluy River, Sakha-Yakutia, Russia},

author = { E.V. Galuskin and I.O. Galuskina and K. Stadnicka and T.M. Armbruster and M. Kozanecki},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-34249850483&doi=10.2113%2fgscanmin.45.2.239&partnerID=40&md5=8b2796bba82b943cd6db0a72c46d7596},

doi = {10.2113/gscanmin.45.2.239},

issn = {00084476},

year  = {2007},

date = {2007-01-01},

journal = {Canadian Mineralogist},

volume = {45},

number = {2},

pages = {239-248},

abstract = {The crystal structure of a Si-deficient vesuvianite, space group P4/nnc, a 15.678(1), c 11.828(1) Å, from the Wiluy River, Sakha-Yakutia, Russia, has been refined from single-crystal X-ray data to R = 0.037. Electron-microprobe analyses indicate that this vesuvianite has only ca. 16 Si pfu in contrast to regular vesuvianite with 18 Si pfu. Site-occupancy refinement yielded substantial vacancies at orthosilicate sites Z(1): 25% vacancies, Z(2): 16% vacancies. Vacancies at the tetrahedral site are associated with increased Z(1)-0 and Z(2)-O distances, 1.687 and 1.660 Å, respectively. Vacancies and increased Z(1)-O and Z(2)-O bond lengths are consistent with hydrogarnet-type defects, where SiO4 is replaced by H4O4 tetrahedra. The single crystal investigated shows the highest hydrogarnet-type substitution analyzed by structure refinement of vesuvianite. No vacancies were found involving the disilicate groups. Along the e axis, the increased size of Z(1) tetrahedra is balanced by a compression of the adjacent X(3) Ca-bearing dodecahedra. This structural flexibility is the reason why the length of the c axis remains largely independent of the hydrogarnet-type substitution. A corresponding structural flexibility does not exist along the a axis, leading to a systematic increase of a with increasing proportion of vacancies at the Si site. Polarized Raman spectra in the OH-stretching region are interpreted to indicate that hydrogarnet-type defects in vesuvianite lead to a more isotropic polarization of the absorption bands at about 3650 cm-1.},

note = {16},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-41849149661,

title = {Dovyrenite Ca6Zr[Si2O7] 2(OH)4 - A new mineral from skarned carbonate xenoliths in basic-ultrabasic rocks of the Ioko-Dovyren Massif, Northern Baikal Region, Russia},

author = { E.V. Galuskin and N.N. Pertsev and T.M. Armbruster and M. Kadiyski and A.E. Zadov and I.O. Galuskina and P. Dzierzanowski and R. Wrzalik and E.V. Kislov},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-41849149661&doi=10.2478%2fv10002-007-0012-y&partnerID=40&md5=8e3da6c75175899c4a897d23549138be},

doi = {10.2478/v10002-007-0012-y},

issn = {00326267},

year  = {2007},

date = {2007-01-01},

journal = {Mineralogia Polonica},

volume = {38},

number = {1},

pages = {15-28},

abstract = {Dovyrenite, simplified formula Ca6Zr[Si2O 7]2(OH)4, occurs as an accessory mineral in vein skarns developed in carbonate xenoliths in subvolcanic layered plagiodunite-troctolite series in the Ioko-Dovyren Massif of Proterozoic age, Northern Baikal Region, Buryatia, Russia. Dovyrenite is a late mineral of altered pyroxene and melilite-monticellite skarns. Associated minerals are Zr-bearing phases: fassaitic pyroxene, perovskite and hydrogarnets; and also monticellite, vesuvianite, diopside, foshagite, brucite, calzirtite, tazheranite, baghdadite, apatite, calcite, native bismuth, sphalerite, selenian galena, clausthalite, safflorite, rammelsbergite, pyrrhotite, pentlandite, valleriite, laitakarite, nickeline, nickel-skutterudite. The average structure of dovyrenite is orthorhombic, space group Pnnm, with subcell parameters A = 5.666(16) Å},

note = {9},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-27644515334,

title = {A natural scandian garnet},

author = { I.O. Galuskina and E.V. Galuskin and P. Dzierzanowski and T.M. Armbruster and M. Kozanecki},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-27644515334&doi=10.2138%2fam.2005.1981&partnerID=40&md5=aaf2369cd19512bf3fae320344d1b366},

doi = {10.2138/am.2005.1981},

issn = {0003004X},

year  = {2005},

date = {2005-01-01},

journal = {American Mineralogist},

volume = {90},

number = {10},

pages = {1688-1692},

publisher = {Mineralogical Society of America},

abstract = {Garnet from an aposkarn achtarandite-bearing rodingite-like rock in Sakha-Yakutia, Russia, has a Sc content close to 6 wt% Sc2O3 (∼0.45 apfu). The scandian garnet is a relict mineral from a high-temperature, shallow-level melilite skarn. Structural and electron microprobe data for a crystal of the scandian garnet with cell parameter a = 12.331(1) Å, Ia3̄d allows refinement of the structural formula (Ca2.97Mg0.02 Y0.01)∑3(Fe0.6633+ Zr0.584Ti0.2944+Sc0.153 Cr0.152Mg0.094Fe0.042+ Hf0.008V0.003)∑2(Si1.898 Al0.420Ti0.3594+Fe0.323 3+)∑3O12. Investigation of the composition of many of the scandian garnets reveals the existence of a solid-solution between kimzeyite-schorlomite Ca3 (Zr;Ti)2(Al;Fe)2SiO12 and the scandium analog of andradite Ca3Sc2Si3 O12. This is the first report of a natural scandian garnet.},

note = {17},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-0242457616,

title = {Morphology, composition and structure of low-temperature P4/nnc high-fluorine vesuvianite whiskers from Polar Yakutia, Russia},

author = { E.V. Galuskin and T.M. Armbruster and A. Malsy and I.O. Galuskina and M. Sitarz},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0242457616&doi=10.2113%2fgscanmin.41.4.843&partnerID=40&md5=dbeeb29c5a19695199c6862ce498b893},

doi = {10.2113/gscanmin.41.4.843},

issn = {00084476},

year  = {2003},

date = {2003-01-01},

journal = {Canadian Mineralogist},

volume = {41},

number = {4},

pages = {843-856},

publisher = {Mineralogical Association of Canada},

abstract = {Whiskers and needles of F-rich vesuvianite were found together with diopside in cavities of an altered magnesian skarn in the Tas-Khayakhtakh Mountains of Polar Yakutia, in Russia. The acicular crystals are strongly zoned and formed between two generations of diopside. The chemical composition of the vesuvianite whiskers is more homogeneous and resembles that of the outermost rim of the vesuvianite needles. In the last stage, fluorapophyllite, prehnite, titanite, calcite and quartz overgrew vesuvianite. Whiskers of vesuvianite crystallized at low activity of CO2 and P-T conditions corresponding to the prehnite-pumpellyite facies. Single-crystal X-ray refinements of the structure of three vesuvianite whiskers, for which electron-microprobe data also were collected, revealed P4/nnc space-group symmetry and (F;Cl) substitution at O(10) within disordered strings running parallel to the four-fold axis. In addition, there is partial substitution of F at O(11), usually occupied by OH in low-temperature vesuvianite. The high symmetry (P4/nnc) in low-temperature (<350°C) whiskers at vesuvianite adds evidence that the degree of string order is determined not only by the temperature of crystallization, as hitherto assumed, but also by the prevailing composition of the fluid and the regime of crystal growth leading to substitutions that disturb intra-rod order and particularly long-range rod order. Long-range rod order leads to reduced symmetry (P4/n or P4nc), typical of vesuvianite crystallized at low temperature in rodingites. Vesuvianite whiskers formed in a kinetic regime where the growth rates were selectively influenced by surface-active substances poisoning the prism faces. Growth of faces in vesuvianite whiskers is explained by a tangential layer-by-layer mechanism without participation of a central screw dislocation.},

note = {31},

keywords = {},

pubstate = {published},

tppubtype = {article}

}