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Calciolangbeinite, K2Ca2(SO4)3, a new mineral from the Tolbachik volcano, Kamchatka, Russia

Published online by Cambridge University Press:  05 July 2018

I. V. Pekov ,
M. E. Zelenski ,
N. V. Zubkova ,
V. O. Yapaskurt ,
N. V. Chukanov ,
D. I. Belakovskiy  and
D. Y. Pushcharovsky
I. V. Pekov*
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
M. E. Zelenski
Affiliation:
Institute of Experimental Mineralogy of the Russian Academy of Sciences, 142432 Chernogolovka, Moscow Oblast’, Russia
N. V. Zubkova
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
V. O. Yapaskurt
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
N. V. Chukanov
Affiliation:
Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Oblast’, Russia
D. I. Belakovskiy
Affiliation:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Leninsky Prospekt 18-2, 119071 Moscow, Russia
D. Y. Pushcharovsky
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
*
E-mail: igorpekov@mail.ru
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Abstract

The new mineral calciolangbeinite, ideally K2Ca2(SO4)3, is the Ca-dominant analogue of langbeinite. It occurs in sublimates at the Yadovitaya fumarole on the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure eruption, Tolbachik volcano, Kamchatka, Russia. The mineral is associated with langbeinite, piypite, hematite, rutile, pseudobrookite, orthoclase, lyonsite, lammerite, cyanochroite and chlorothionite. Calciolangbeinite occurs as tetrahedral to pseudooctahedral crystals, which are bounded by {111} and {11}, and as anhedral grains up to 1 mm in size, aggregated into clusters up to 2 mm across, and forming crusts covering areas of up to 1.5x1.5 cm on the surface of volcanic scoria. Late-stage calciolangbeinite occurs in complex epitaxial intergrowths with langbeinite. Calciolangbeinite is transparent and colourless with white streak and vitreous lustre. Its Mohs' hardness is 3–3½. It is brittle, has a conchoidal fracture and no obvious cleavage. The measured and calculated densities are Dmeas = 2.68(2) and Dcalc = 2.74 g cm–3, respectively. Calciolangbeinite is optically isotropic with n = 1.527(2). The chemical composition of the holotype specimen is Na2O 0.38, K2O 21.85, MgO 6.52, CaO 16.00, MnO 0.27, FeO 0.08, Al2O3 0.09, SO3 55.14, total 100.63 wt.%. The empirical formula, calculated on the basis of twelve oxygen atoms per formula unit, is K2.01(Ca1.24Mg0.70Na0.05Mn0.02Fe0.01Al0.01)S 2.03S3.00O12. Calciolangbeinite is cubic, space group P213, a = 10.1887(4) Å, V = 1057.68(4) Å3 and Z = 4. The strongest reflections in the X-ray powder pattern [listed as (d, Å (I)(hkl)] are 5.84(8)(111); 4.54(9)(120); 4.15(27)(211); 3.218 (100) (310, 130); 2.838 (8) (230, 320), 2.736 (37) (231, 321), 2.006 (11) (431, 341) , 1.658(8)(611,532,352). The crystal structure was refined from single-crystal X-ray diffraction data to R = 0.0447. The structure is based on the langbeinite-type three-dimensional complex framework, which is made up of (Ca,Mg)O6 octahedra (Ca and Mg are disordered) and SO4 tetrahedra. Potassium atoms occupy two sites in voids in the framework; K(1) cations are located in ninefold polyhedra whereas K(2) cations are sited in significantly distorted octahedra. Calciolangbeinite and langbeinite are isostructural and form a solid-solution series.

Keywords

calciolangbeinitenew minerallangbeinitelangbeinite groupsulfatecrystal structurefumarole sublimateTolbachik volcanoKamchatka
Type
Research Article
Information
Mineralogical Magazine , Volume 76 , Issue 3 , June 2012 , pp. 673 - 682
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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References

Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C. (2003) Handbook of Mineralogy. Borates, Carbonates, Sulfates, volume 5. Mineral Data Publishing, Tucson, Arizona, USA..Google Scholar
Bellanca, A. (1947) Sulla simmetria della manganolangbeinite. Rendiconti dell’Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali, Series. VIII, 2, 451—455 Google Scholar
Fedotov, S.A. and Markhinin, Y.K. (editors) (1983) The Great Tolbachik Fissure Eruption. Geological and Geophysical Data 1975-1976. Cambridge University Press, Cambridge, UK..Google Scholar
Magome, E., Itoh, K., Moriyoshi, C. and Vlokh, R. (2004) Steric hindrance in langbeinite-type K2Cd2cMn2(1-c)(SO4)3 mixed crystals. Journal of the Physica. Society of Japan, 73, 2444—2448 CrossRefGoogle Scholar
Mandarino, J.A. (1981) The Gladstone-Dale relationship: part IV. The compatibility concept and its application. The Canadia. Mineralogist, 19, 441—450 Google Scholar
Mereiter, K. (1979) Refinement of the crystal structure of langbeinite, K2Mg2(SO4)3. Neues Jahrbuch für Mineralogie, Monatshefte, 1979, 182—188 Google Scholar
Naze-Nancy, Masalehdani M., Mees, F., Dubois, M., Coquinot, Y., Potdevin, J.-L., Fialin, M. and Blanc- Valleron, M.-M. (2009) Condensate minerals from a burning coal-waste heap in Avion, Northern France. The Canadia. Mineralogist, 47, 573—591 Google Scholar
Norberg, S.T. (2002) New phosphate langbeinites, K2MTi(PO4)3 (M = Er, Yb or Y) and an alternative description of the langbeinite framework. Act Crystallographica, B58, 743—749 CrossRefGoogle Scholar
Parafiniuk, J. and Kruszewski, Ł. (2009) Ammonium minerals from burning coal-dumps of the Upper Silesian Coal Basin (Poland). Geologica. Quarterly, 53, 341—356 Google Scholar
Pushcharovsky, D.Yu., Lima de Faria J. and Rastsvetaeva, R.K. (1998) Main structural subdivisions and structural formulas of sulfate minerals. Zeitschrift fü. Kristallographie, 213, 141—150 Google Scholar
Sejkora, J. and Kotrlý , M. (2001) Sulfáty vysokoteplotní oxidační minerální asociace; hořící odval dolu Kateřina v Radvanicích v Č echách. Bulletin Mineralogicko-Petrografické ho Oddě l ení Národního Muze. Praze, 9, 261—267 Google Scholar
Shcherbakova, E.P. and Bazhenova, L.F. (1989) Efremovite (NH4)2Mg2(SO4)3 - the ammonium analogue of langbeinite - a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 118(3), 84—87.[in Russian].Google Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Act Crystallographica, A64, 112—122 CrossRefGoogle Scholar
Shimobayashi, N., Ohnishi, M. and Miura, H. (2011) Ammonium sulfate minerals from Mikasa, Hokkaido, Japan: boussingaultite, godovikovite, efremovite and tschermigite. Journal of Mineralogical and Petrologica. Sciences, 106, 158—163 Google Scholar
Speer, D. and Salje, E. (1986) Phase transitions in langbeinites. I. Crystal chemistry and structures of K-double sulfates of the langbeinite type M2 ++K2(SO4)3, M++ = Mg, Ni, Co, Zn, Ca. Physics and Chemistry of Minerals, 13, 17—24 CrossRefGoogle Scholar
Symonds, R.B. and Reed, M.H. (1993) .calculation of multicomponent chemical equilibria in gas–solid– liquid systems: calculation methods, thermochemical data, and applications to studies of high-temperature volcanic gases with examples from Mount St. Helens. American Journal of Science, 293, 758—864 CrossRefGoogle Scholar
Trubach, I.G., Beskrovnyi, A.I., Orlova, A.I., Orlova, V.A. and Kurazhkovskaya, V.S. (2004) Synthesis and investigation of the new phosphates K2LnZr(PO4)3 (Ln = Ce-Yb, Y) with langbeinite structure. Crystallograph. Reports, 49, 614—618 Google Scholar
Vergasova, L.P. and Filatov, S.K. (1993) Minerals of volcanic exhalations - a new genetic group (after the data of Tolbachik volcano eruption in 1975-1976 ) . Za piski Vs erossiisko go Mineralogicheskogo Obshchestva, 122(4), 68—76.[in Russian].Google Scholar
Zambonini, F. and Carobbi, G. (1924) Sulla presenza, tra i prodotti dell’attuale attivitá del Vesuvio, del composto Mn2K2(SO4)3. Rendiconti della Regia Accademia delle Scienze Fisiche e Matematiche de Napoli, 30, 123—126 Google Scholar
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