Hostname: page-component-76c49bb84f-hwk5l Total loading time: 0 Render date: 2025-07-05T01:07:29.479Z Has data issue: false hasContentIssue false
  • English
  • Français

Further developments in the structure topology of the astrophyllite-group minerals

Published online by Cambridge University Press:  05 July 2018

E. Sokolova
E. Sokolova*
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Moscow 119017, Russia
*
*E-mail: elena_sokolova@umanitoba.ca
Get access Rights & Permissions [Opens in a new window]

Abstract

The structure topology and crystal chemistry have been considered for ten astrophyllite-group minerals that contain the HOH layer, a central trioctahedral (O) sheet and two adjacent (H) sheets of [5]- and [6]-coordinated D polyhedra and the astrophyllite (T4O12) ribbons. The HOH layer is characterized by a planar cell with a ∼5.4, b ∼11.9 A ˚ and a^b ∼103°. The ideal composition of the O sheet is Fe72+ (astrophyllite) or Mn72+(kupletskite). All structures consist of an HOH layer and an I (intermediate) block that consists of atoms between two HOH layers. In the astrophyllite group, there are two types of structures based on the type of linkage of HOH layers: (1) HOH layers link directly where they share common vertices of D octahedra, and (2) HOH layers do not link directly via polyhedra of the H sheets. The type-1 structure occurs in astrophyllite, niobophyllite, nalivkinite, tarbagataite, kupletskite, niobokupletskite and kupletskite-(Cs); the type-2 structure occurs in magnesioastrophyllite, sveinbergeite and devitoite. The general formulae for the eight astrophyllite-group minerals (astrophyllite, niobophyllite, nalivkinite, tarbagataite, kupletskite, niobokupletskite, kupletskite-(Cs), magnesioastrophyllite) and for the extended astrophyllite group including devitoite and sveinbergeite are A2BC7D2T8O26(OH)4X0–1 and A2pBrC7D2(T4O12)2IXD2OXA4OXDnP, respectively, where C and D are cations of the O and H sheets, C =[6](Fe2+, Mn, Fe3+, Na, Mg, Zn) at the M(1–4) sites; D = [6,5](Ti, Nb, Zr, Fe3+); T = Si, minor Al; A2pBrI is the composition of the I block where p = 1,2; r = 1,2; A = K, Cs, Li, Ba, H2O, ☐; B = Na, Ca, Ba, H2O, ☐; I represents the composition of the central part of the I block, excluding peripheral layers of the form A2B; X = O, OH, F and H2O; n = 0, 1, 2. Two topological issues have been considered: (1) the pattern of sizes of the M octahedra in the O sheet, M(1) > M(2) > M(3) > M(4) and (2) different topologies of the HOH layer in magnesioastrophyllite and all other structures of the astrophyllite group.

Keywords

astrophyllite groupgeneral formulaendmember formulatopologyHOH layerintermediate blockmagnesioastrophyllite

Information

Type
Research Article
Information
Mineralogical Magazine , Volume 76 , Issue 4 , August 2012 , pp. 863 - 882
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Agakhanov, A.A., Pautov, L.A., Uvarova, Y.A., Sokolova, E., Hawthorne, F.C. and Karpenko, V.Yu. (2008) Nalivkinite, Li2NaFe7 +Ti2(Si8O24)O2(OH)4F, a new mineral of the astrophyllite group from the Darai-Pioz massif, Tadjikistan. New Data on Minerals, 43, 5–12.Google Scholar
Belov, N.V. (1963) Essays on structural mineralogy. XIV. 97. Ba,Fe-titanosilicate-bafertisite. 98. Anion role of Ti and Zr. Titanates, zirconates, titanosili-cates, zirconosilicates. Mineralogicheskii Sbornik L'vovskogo Geologicheskogo Obshchestva, N17, 22–29, [in Russian].Google Scholar
Belov, N.V. (1976) Essays on structural mineralogy. Nedra, Moscow, [in Russian].Google Scholar
Camara, F., Sokolova, E., Abdu, Y. and Hawthorne, F.C. Essays on structural mineralogy. 241–249.Google Scholar
Kampf, A.R, Rossman, G.R., Steele, I.M., Pluth, J.J., Dunning, GE. and Walstrom, R.E. (2010) Devitoite, a new heterophyllo silicate mineral with astrophyl-lite-like layers from eastern Fresno County, California. The Canadian Mineralogist, 48, 29–40.CrossRefGoogle Scholar
Kapustin, Yu. L. (1973) Zircophyllite, the zirconium analogue of astrophyllite. International Geology Review, 15, 621–625.CrossRefGoogle Scholar
Khomyakov, A.P., Camara, F., Sokolova, E., Hawthorne, F.C. and Abdu, Y. (2011) Sveinbergeite, Ca(Fe6 +Fe +)Ti2(Si4O12)2O2(OH)5(H2O)4, a new astrophyllite-group mineral species from the Larvik plutonic complex, Oslo region, Norway: description and crystal structure. Mineralogical Magazine, 75, 2687–2702.CrossRefGoogle Scholar
Liebau, F. (1985) Structural Chemistry of Silicates. Springer-Verlag, Berlin.CrossRefGoogle Scholar
Ma, Z.-S., Li, G.-W., Shi, N.-C, Zhou, H.-Y., Ye, D.-I. and Pushcharovskii, DYu. (2001) Structure refinement of astrophyllite. Science in China Series D, 44, 508–516.CrossRefGoogle Scholar
Nickel, E.H., Rowland, J.F. and Charette, D.J. (1964) Niobophyllite—the niobium analogue of astrophyllite; a new mineral from Seal Lake, Labrador. The Canadian Mineralogist, 8, 40–52.Google Scholar
Peng, C.C. and Ma, C.S. (1963) Discovery of a new Si—O ribbon—crystal-structure analysis of astrophyllite. Scientia Sinica, 12, 272–276, [in Russian].Google Scholar
Peng, C.C. and Ma, C.S. (1964) Crystal structure of triclinic manganoastrophyllite. Scientia Sinica, 13, 1180–1183, [in Russian].Google Scholar
Piilonen, P.C., Lalonde, A.E., McDonald, A.M. and Gault, RA. (2000) Niobokupletskite, a new astro-phyllite-group mineral from Mont Saint-Hilaire, Quebec, Canada: description and crystal structure. The Canadian Mineralogist, 38, 627–639.CrossRefGoogle Scholar
Piilonen, P.C., McDonald, A.M. and Lalonde, A.E. (2001) Kupletskite polytypes from the Lovozero massif, Kola Peninsula, Russia: kupletskite and kupletskite-Ma2b2c. European Journal of Mineralogy, 13, 973–984.CrossRefGoogle Scholar
Piilonen, P.C., Lalonde, A.E., McDonald, A.M., Gault, R.A. and Larsen, A.O. (2003a) Insights into astrophyllite-group minerals. I. Nomenclature, composition and development of a standardized general formula. The Canadian Mineralogist, 41, 1–26.CrossRefGoogle Scholar
Piilonen, P.C., McDonald, A.M. and Lalonde, A.E. (2003b) Insights into astrophyllite-group minerals. II. Crystal chemistry. The Canadian Mineralogist, 41, 27–54.CrossRefGoogle Scholar
Piilonen, P.C., Pekov, I.V., Back, M., Steede, T. and Gault, RA. (2006) Crystal-structure refinement of a Zn-rich kupletskite from Mont Saint-Hilaire, Quebec, with contributions to the geochemistry of zinc in peralkaline environments. Mineralogical Magazine, 70, 565–578.CrossRefGoogle Scholar
Semenov, E.I. (1956) Kupletskite, a new mineral of the astrophyllite group. Doklady Akademii Nauk SSSR, 108, 933–936, [in Russian].Google Scholar
Shannon, R.D. (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 751–767.CrossRefGoogle Scholar
Shi, N.-C, Ma, Z.S., Li, G.W., Yamnova, N.A. and Pushcharovskii, D.Yu. (1998) Structure refinement of monoclinic astrophyllite. Acta Crystallographica, B54, 109–114.CrossRefGoogle Scholar
Sokolova, E. (2006) From structure topology to chemical composition: I. Structural hierarchy and stereochemistry in titanium disilicate minerals. The Canadian Mineralogist, 44, 1273–1330.CrossRefGoogle Scholar
Sokolova, E. and Camara, F. (2008) Re-investigation of the crystal structure of magnesium astrophyllite. European Journal of Mineralogy, 20, 253–260.CrossRefGoogle Scholar
Stepanov, A.V., Bekenova, G.K., Levin, V.I., Sokolova, E., Hawthorne, F.C. and Dobrovol’ skaya, E.A. (2012) Tarbagataite, (K,Q)2(Ca,Na)(Fe+,Mn)7Ti2(Si4O12)2O2(OH)4(OH,F), a new astrophyllite-group mineral species from the Verkhnee Espe deposit, Akjailyautas Mountains, Kazakhstan: description and crystal structure. The Canadian Mineralogist, 50, 159–168.CrossRefGoogle Scholar
Uvarova, Y.A., Sokolova, E., Hawthorne, F.C, Agakhanov, A.A. and Pautov, L.A. (2008) The crystal structure of nalivlinite, a new lithium member of the astrophyllite group. The Canadian Mineralogist, 46, 651–659.CrossRefGoogle Scholar
Weibye, P.C. (1848) Beitrage zur topographischen Mineralogie Norwegens. Archiv fur Mineralogie, Geognosie Bergbau und Huttenkunde, 22, 465–544.Google Scholar
Woodrow, P.I (1967) The crystal structure of astro-phyllite. Acta Crystallographica, 22, 673–678.CrossRefGoogle Scholar
Yamnova, N.A., Egorov Tismenko, Yu.K., Zlykhenskaya, I.V. and Khomyakov, A.P (2000) Refined crystal structure of iron-rich triclinic astrophyllite. Crystallography Reports, 45, 585–590.CrossRefGoogle Scholar