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Refinement of the crystal structure of berezanskite, Ti2 2KLi3(Si12O30)

Published online by Cambridge University Press:  02 January 2018

F. C. Hawthorne ,
E. Sokolova ,
L.A. Pautov ,
A. A. Agakhanov  and
V. Yu. Karpenko
F. C. Hawthorne*
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
E. Sokolova
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
L.A. Pautov
Affiliation:
Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskii Prospect 18-2, Moscow 117071 Russia
A. A. Agakhanov
Affiliation:
Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskii Prospect 18-2, Moscow 117071 Russia
V. Yu. Karpenko
Affiliation:
Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskii Prospect 18-2, Moscow 117071 Russia
*
E-mail: frank_hawthorne@umanitoba.ca
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Abstract

Berezanskite, ideally Ti□2KLi3(Si12O30), is hexagonal, space group P6/mcc, a = 9.898(4), c = 14.276(6) Å, V = 1211.2(9) Å3, Z = 2. The crystal structure was refined to an R1 index of 2.08% based on 392 unique observed reflections. Berezanskite is isostructural with milarite, ideally ACa2BoCKT(2)(Be2Al)(T(1)Si12O30)(H2O)0–2. The structural unit is of the form [T(2)3T(1)12O30] with T(1) = Si and T(2) = Li, in which (LiO4) tetrahedra link [Si12O30] six-membered double-rings into a framework. The A, B and C sites occur in the interstices of the framework with the following site populations: A = Ti4+2, <A–O>= 1.938(2) Å; B =□2; C = K, <C–O> = 3.058(2) Å. In the T(2) = Li3 milarite-group minerals, the <C–O> distance is inversely related to the occupancy of the B site.

Keywords

berezanskitemilarite groupDarai-PiozTajikistancrystal structureelectron microprobe analysis
Type
Research Article
Information
Mineralogical Magazine , Volume 80 , Issue 5 , August 2016 , pp. 733 - 737
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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References

Armbruster, T. and Oberhänsli, R. (1988) Crystal chemistry of double-ring silicates: Structures of sugilite and brannockite. American Mineralogist, 73, 594–600.Google Scholar
Černý, P., Hawthorne, F.C. and Jarosewich, E. (1980) The crystal chemistry of milarite. The Canadian Mineralogist, 18, 41–56.Google Scholar
Cooper, M.A., Hawthorne, F.C. and Grew, E.S. (1999) The crystal chemistry of sogdianite, a milarite-group mineral. American Mineralogist, 84, 764–768.CrossRefGoogle Scholar
Dusmatov, Y (1968) A new mineral — sogdianite. Doklady Akademii Nauk SSSR, 182, 1176–1177 [in Russian].Google Scholar
Ferraris, G., Prencipe, M., Pautov, L.A. and Sokolova, E. Y (1999) Crystal structure of darapiosite and comparison with Li- and Zn-bearing minerals of the milarite group. The Canadian Mineralogist, 37, 769–774.Google Scholar
Forbes, W.C., Baur, W.H. and Khan, A.A. (1972) Crystal chemistry of milarite-type minerals. American Mineralogist, 57, 463–472.Google Scholar
Hawthorne, F.C. and Smith, J.V. (1986) Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on insertion of 2-connected vertices into 3-connected plane nets. Zeitschrift für Kristallographie, 175, 15–30.Google Scholar
Hawthorne, EC, Kimata, M., Cerny, P., Ball, N., Rossman, G.R. and Grice, J.D. (1991) The crystal chemistry of the milarite-group minerals. American Mineralogist, 76, 1836–1856.Google Scholar
Hawthorne, EC, Ungaretti, L. and Oberti, R. (1995) Site populations in minerals: terminology and presentation of results of crystal-structure refinement. The Canadian Mineralogist, 33, 907—911.Google Scholar
Kimata, M. and Hawthorne, F.C. (1989) The crystal structure of milarite: two split site model. Annual Report, Institute ofGeoscience, University of Tsukuba, 15, 92–95.Google Scholar
Pautov, L.A. and Agakhanov, A.A. (1997) Berezanskite KLi3Ti2Si12O30, a new mineral. Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva, 126(4), 75–80.[in Russian].Google Scholar
Pautov, L.A., Agakhanov, A.A., Sokolova, E.V. and Ignatenko, K.I. (1996) Dusmatovite, a new mineral of the milarite group. Vestnik Moskovskogo Universiteta, Series 4, Geologicheskaya, N2, 54—60.[in Russian].Google Scholar
Pautov, L.A., Agakhanov, A.A. and Sokolova, E.V. (1998) Shibkovite K(Ca,Mn,Na)2(K(2--x)[Zlx)2 Zn3Si12O30; a new mineral. Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva, 127(4), 89–94.[in Russian].Google Scholar
Semenov, E.I., Dusmatov, V.D., Khomyakov, A.P., Voronkov, A.A. and Kazakova, M.Y. (1975) Darapiosite, a new mineral of the milarite group. Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva, 104(5), 583–585.[in Russian].Google Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112—122.Google Scholar
Sokolova, E. and Pautov, L.A. (1995) Crystal structure of dusmatovite. Physics Doklady, 40, 607–610.Google Scholar
Sokolova, E., Rybakov, V.B. and Pautov, L.A. (1999) Crystal structure of shibkovite. Doklady Akademii Nauk, 369(3), 378–380.[in Russian].Google Scholar
Sokolova, E., Hawthorne, F.C. and Pautov, L.A. (2000) The crystal chemistry of Li-bearing minerals with the milarite-type structure: The crystal structure of end-member sogdianite. The Canadian Mineralogist, 38, 853–859.CrossRefGoogle Scholar
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