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Chemographic exploration of the hyalotekite structure-type

  • Frank C. Hawthorne (a1), Elena Sokolova (a1), Atali A. Agakhanov (a2), Leonid A. Pautov (a2), Vladimir Yu. Karpenko (a2) and Edward S. Grew (a3)...

Abstract

The hyalotekite group has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (memorandum 57–SM/16). The general formula of the minerals of the hyalotekite group may be written as: A2B2M2[Si8T4O28]W where A = Ba2+, Pb2+ or K+; B = Ba2+, Pb2+ or K+; M = Ca2+, Y3+ or REE3+; T = Si4+, B3+ or Be2+; and W = F or □ (where REE = rare-earth elements and □ = vacancy).

Four minerals are currently known in this group: hyalotekite, Ba4Ca2[Si8B2(SiB)O28]F, triclinic, I $\bar 1$ ; khvorovite, Pb2+4Ca2[Si8B2(SiB)O28]F, triclinic I $\bar 1$ ; kapitsaite-(Y), Ba4(YCa)[Si8B2B2O28]F, triclinic, I $\bar 1$ ; and itsiite Ba4Ca2[Si8B4O28]□, tetragonal, I $\bar 4$ 2m.

We explore the possible end-member compositions within this group by conflating the properties of an end-member with the stoichiometry imposed by the bond topology of the hyalotekite structure-type and the crystal-chemical properties of its known constituents. There are two high-coordination sites in the hyalotekite structure, A and B, and occupancy of each of these sites can be determined only by crystal-structure refinement. If these two sites are considered together, there are 19 end-member compositions of the triclinic structure and six end-member compositions of the tetragonal structure involving A and B = Ba2+, Pb2+, K+; M = Ca2+, Y3+, REE3+; and T = Si4+, B3+, Be2+. There is the possibility for many other hyalotekite-group minerals, and two potential new minerals have been identified from data in the literature.

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Associate Editor: G. Diego Gatta

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References

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Agakhanov, A.A., Pautov, L.A., Karpenko, V.Yu. and Siidra, O.I. (2015) A new data about minerals of the hyalotekite group from alkaline massif Darai-Pioz, Tadjikistan. Ontogeny, Phylogeny and System Of Mineralogy. The Proceedings of All-Russian Conference with International Participation. Miass, 2015. Miass: Institute of Mineralogy UB RAS, 5457 [in Russian].
Brese, N.E. and O'Keeffe, M. (1991) Bond-valence parameters for solids. Acta Crystallographica, B47, 192197.
Christy, A.G., Grew, E.S., Mayo, S.C., Yates, M.G. and Belakovskiy, D.I. (1998) Hyalotekite, (Ba,Pb,K)4(Ca,Y)2Si8(B,Be)2(Si,B)2O28F, a tectosilicate related to scapolite: new structure refinement, phase transitions and a short-range ordered 3b superstructure. Mineralogical Magazine, 62, 7792.
Gagné, O. and Hawthorne, F.C. (2015) Comprehensive derivation of bond-valence parameters for ion pairs involving oxygen. Acta Crystallographica, B71, 562578.
Gibbs, J.W. (1961) The Scientific papers of J. Willard Gibbs. Volume One. Thermodynamics. Dover Publications, New York.
Grew, E.S., Yates, M.G., Belakovskiy, D.I., Rouse, R.C. Su, S-C. and Marquez, N. (1994) Hyalotekite from reedmergnerite-bearing peralkaline pegmatite, Dara-i-Pioz, Tajikistan and from Mn skarn, Långban, Vårmland, Sweden: a new look at an old mineral. Mineralogical Magazine, 58, 285297.
Hawthorne, F.C. (2002) The use of end-member charge-arrangements in defining new mineral species and heterovalent substitutions in complex minerals. The Canadian Mineralogist, 40, 699710.
Hawthorne, F.C. and Huminicki, D.M.C. (2002) The crystal chemistry of beryllium. Pp. 333404 in: Beryllium: Mineralogy, Petrology and Geochemistry (Grew, E.S., editor). Reviews in Mineralogy and Geochemistry, 50. Mineralogical Society of America & the Geochemical Society, Washington DC.
Hawthorne, F.C., Ungaretti, L. and Oberti, R. (1995) Site populations in minerals: terminology and presentation of results of crystal-structure refinement. The Canadian Mineralogist, 33, 907911.
Hawthorne, F.C., Burns, P.C. and Grice, J.D. (1996) The crystal chemistry of boron. Pp. 41115 in: Boron: Mineralogy, Petrology, and Geochemistry (Anovitz, L.M. and Grew, E.S., editors). Reviews in Mineralogy, 33. Mineralogical Society of America, Washington DC.
Kampf, A.R., Peterson, R.C. and Joy, B.R. (2014) Itsiite, Ba2Ca(BSi2O7)2, a new mineral species from Yukon, Canada: description and crystal structure. The Canadian Mineralogist, 52, 401407.
Lindström, G. (1887) Om hyalotekit från Långban. Öfversigt af Kongliga Vetenkaps-Akademiens Förhandlingar, 9, 589593.
Moore, P.B., Araki, T. and Ghose, S. (1982) Hyalotekite, a complex lead borosilicate: its crystal structure and the lone-pair effect of Pb(II). American Mineralogist, 67, 10121020.
Nordenskiöld, A.E. (1877) Nya mineralier från Långban. Geologiska Föreningens Förhandlingar, 3, 376384.
Pasero, M. et al. (2017) The official IMA-CNMNC List of Mineral Names. http://nrmima.nrm.se/.
Pautov, L.A., Khvorov, P.V., Sokolova, E.V., Ferraris, G., Ivaldi, G. and Bazhenova, L.F. (2000) Kapitsaite-(Y), (Ba,K)4(Y,Ca)2Si8(B,Si)4O28F – a new mineral. Zapiski Vserossiiskogo Mineralogicheskogo Obchshestva, 129(6), 4249 [in Russian].
Pautov, L.A., Agakhanov, A.A., Sokolova, E., Hawthorne, F.C., Karpenko, V.Yu., Siidra, O.I., Garanin, V.K. and Abdu, Y.A. (2015) Khvorovite, ideally Pb2+4Ca2[Si8B2(SiB)O28]F, a new hyalotekite-group mineral from the Darai-Pioz alkaline massif, Tajikistan: Description and crystal structure. Mineralogical Magazine, 79, 949963.
Sokolova, E.V., Ferraris, G., Ivaldi, G., Pautov, L.A. and Khvorov, P.V. (2000) Crystal structure of kapitsaite-(Y), a new borosilicate isotypic with hyalotekite: Crystal chemistry of the related isomorphous series. Neues Jahrbuch für Mineralogie Monatshefte, 2000, 7484.
Spear, F.S. (1993) Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths. Mineralogical Society of America Monograph.

Keywords

Chemographic exploration of the hyalotekite structure-type

  • Frank C. Hawthorne (a1), Elena Sokolova (a1), Atali A. Agakhanov (a2), Leonid A. Pautov (a2), Vladimir Yu. Karpenko (a2) and Edward S. Grew (a3)...

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