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From structure topology to chemical composition. XII. Titanium silicates: the crystal chemistry of rinkite, Na2Ca4 REETi(Si2O7)2OF3

  • F. Cámara (a1) (a2), E. Sokolova (a2) and F. C. Hawthorne (a2)

Abstract

Rinkite, ideally Na2Ca4 REETi(Si2O7)2OF3 , is a common mineral in alkaline and peralkaline rocks. The crystal structures of five rinkite crystals from three alkaline massifs: Ilimaussaq, Greenland; Khibiny, Kola Peninsula, Russia and Mont Saint-Hilaire, Canada, have been refined as two components related by the TWIN matrix (–1 0 0, 0 –1 0, 1 0 1) (Mo-αa radiation). The crystals, a = 7.4132-7.4414, b = 5.6595-5.6816, c = 18.8181-18.9431 Å, β = 101.353-101.424(2)°, V= 776.1-786.7 Å3, space group P21lc, Z = 2, D calc = 3.376—3.502 g cm–3, were analysed using an electron microprobe subsequent to collection of the X-ray intensity data. Transmission electron microscopy confirmed the presence of pseudomerohedral twinning in rinkite crystals. The crystal structure of rinkite is a framework of TS (titanium silicate) blocks. The TS block consists of HOH sheets (H-heteropolyhedral, O-octahedral). The TS block in rinkite exhibits linkage and stereochemistry typical for Group I (Ti = 1 a.p.f.u.) of Ti disilicate minerals: two H sheets connect to the O sheet such that two (Si2O7) groups link to the trans edges of a Na polyhedron of the O sheet. The crystal chemistry of rinkite and nacareniobsite-(Ce) is discussed.

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Permanent address: Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada

Permanent address: Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Moscow 109017, Russia

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Bellezza, M., Franzini, M., Larsen, A.O., Merlino, S. and Perchiazzi, N. (2004) Grenmarite, a new member of the götzenite-seidozerite-rosenbuschite group from the Langesundsfjord district, Norway: definition and crystal structure. European Journal of Mineralogy, 16, 971–978.
Bellezza, M., Merlino, S. and Perchiazzi, N. (2009) Mosandrite, structural and crystal-chemical relationships with rinkite. The Canadian Mineralogist, 47, 897–908.
Bøggild, O. B. (1953) The mineralogy of Greenland. Meddelelser om Grønland, 149, 220–223.
Brøgger, W.C. (1890) Die miniralian der syenitpegmattigänge der südnorwegischen augit und nephelinsienite. Zeitschrift für Kristallographie, 16, 586–597.
Brown, I.D. (1981) The bond-valence method: an empirical approach to chemical structure and bonding. Pp. 1–30 in: Structure and Bonding in Crystals II (O’Keeffe, M. and Navrotsky, A., editors). Academic Press, New York, 357 pp.
Cámara, F. and Sokolova, E. (2007) From structure topology to chemical composition. VI. Titanium silicates: the crystal structure andcrystal chemistry of bornemanite, a group-III Ti-disilicate mineral. Mineralogical Magazine, 71, 593–610.
Cámara, F. and Sokolova, E. (2009) From structure topology to chemical composition. X. Titanium silicates: the crystal structure andcrystal chemistry of nechelyustovite, a group III Ti-disilicate mineral. Mineralogical Magazine, 73, 887–897.
Cámara, F., Sokolova, E., Hawthorne, F.C. and Abdu, Y. (2008) From structure topology to chemical composition. IX. Titanium silicates: revision of the crystal chemistry of lomonosovite andmurmanite, Group- IV minerals. Mineralogical Magazine, 72, 1207–1228.
Cámara, F., Sokolova, E. and Nieto, F. (2009) Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4 (OH,F)7. II. The crystal structure andcryst al chemistry of a new group-II Ti-disilicate mineral. Mineralogical Magazine, 73, 855–870.
Cannillo, E., Mazzi, F. and Rossi, G. (1972) Crystal structure of götzenite. Soviet Physics Crystallography, 16, 1026–1030.
Christiansen, C.C. and Rønsbo, J.G. (2000) On the structural relationship between götzenite andrinkite. Neues Jahrbuch für Mineralogie Monatshefte, 506–.
Christiansen, C.C., Makovicky, E. and Johnsen, O. (1999) Homology andtypism in heterophyllosilicates. Neues Jahrbuch für Mineralogie Abhandlungen, 175, 153–189.
Christiansen, C.C., Johnsen, O. and Makovicky, E. (2003a) Crystal chemistry of the rosenbuschite group. The Canadian Mineralogist, 41, 1203–1224.
Christiansen, C.C., Gault, R.A., Grice, J.D. and Johnsen, O. (2003b) Kochite, a new member of the rosenbuschite group from the Werner Bjerge alkaline complex, East Greenland. European Journal of Mineralogy, 15, 551–554.
Galli, E. and Alberti, A. (1971) The crystal structure of rinkite. Acta Crystallographica, B27, 1284–.
Gottardi, G. (1966) X-ray crystallography of rinkite. American Mineralogist, 51, 1529–1535.
Kheirov, M.B., Mamedov, Kh.S. and Belov, N.V. (1963) Crystal structure of rinkite, Na(Ca,Ce)2(Ti,Ce)O (Si2O7)F. Doklady Akademii Nauk SSSR, 150, 162–164.
Lorenzen, J. (1884) Untersuchung einiger Mineralien aus Kangerdluarsuk in Grönland. Zeitschrift für Kristallographie, 9, 243–254.
Petersen, O.V., Rønsbo, J.G. and Leonardsen, E.S. (1989) Nacareniobsite-(Ce), a new mineral species from the Ilímaussaq alkaline complex, South Greenland, and its relation to mosandrite and the rinkite series. Neues Jahrbuch für Mineralogie Monatshefte, 96–.
Pouchou, J.L. and Pichoir, F. (1985) PAP (φρ) procedure for improved quantitative microanalysis. Pp. 104–106 in: Microbeam Analysis (Armstrong, J.T., editor). San Francisco Press, San Francisco, California, USA.
Pushcharovskii, D.Yu., Pasero, M., Merlino, S., Vladykin, N.D., Zubkova, N.V. and Gobechiya, E.R. (2002) Crystal structure of zirconium-rich seidozerite. Crystallography Reports, 47, 196–200.
Rastsvetaeva, R.K, Borutskii, B.E. and Shlyukova, Z.V. (1991) Crystal structure of Hibbing (Khibinian) rinkite. Soviet Physics Crystallography, 36, 349–351.
Rastsvetaeva, R.K., Pushcharovsky, D.Yu. and Atencio, D. (1995) Crystal structure of giannetite (hainite). Crystallography Reports, 40, 574–578.
Shannon, R.D. (1976) Revisedeffective ionic radii and systematic studies of interatomic distances in halides andchalcogenid es. Acta Crystallographica, A32, 767–.
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 122–.
Shibaeva, R.P., Simonov, V.I. and Belov, N.V. (1964) Crystal structure of the Ca, Na, Zr, Ti silicate rosenbu schite, Ca3.5Na2.5Zr (Ti,Mn,Nb) [Si2O7]2F2O(F,O). Soviet Physics Crystallography, 8, 406–413.
Simonov, V.I. and Belov, N.V. (1960) The determination of the crystal structure of seidozerite. Soviet Physics Crystallography, 4, 146–157.
Simonov, V.I. and Belov, N.V. (1968) Characteristics of the crystal structure of rinkite. Soviet Physics Crystallography, 12, 740–744.
Skszat, S.M. and Simonov, V.I. (1966) The structure of calcium seidozerite. Soviet Physics Crystallography, 10, 505–508.
Slepnev, Yu.S. (1957) On the minerals of the rinkite group. Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya, N3, 75–. [in Russian].
Sokolova, E. (2006) From structure topology to chemical composition. I. Structural hierarchy and stereochemistry in titanium disilicate minerals. The Canadian Mineralogist, 44, 1273–1330.
Sokolova, E. and Cámara, F. (2007) From structure topology to chemical composition. II. Titanium silicates: revision of the crystal structure and chemical formula of delindeite. The Canadian Mineralogist, 45, 1247–1261.
Sokolova, E. and Cámara, F. (2008a) From structure topology to chemical composition. VIII. Titanium silicates: the crystal structure andcrystal chemistry of mosandrite from type locality of Låven (Skådön), Langesundsfjorden, Larvik, Vestfold, Norway. Mineralogical Magazine, 72, 887–897.
Sokolova, E. and Cámara, F. (2008b) From structure topology to chemical composition. III. Titanium silicates: crystal chemistry of barytolamprophyllite. The Canadian Mineralogist, 46, 403–412.
Sokolova, E. and Hawthorne, F.C. (2008a) From structure topology to chemical composition. IV. Titanium silicates: the orthorhombic polytype of nabalamprophyllite from Lovozero massif, Kola Peninsula, Russia. The Canadian Mineralogist, 46, 1323–1331.
Sokolova, E. and Hawthorne, F.C. (2008b) From structure topology to chemical composition. V. Titanium silicates: crystal chemistry of nacareniobsite-(Ce). The Canadian Mineralogist, 46, 1333–1342.
Sokolova, E., Abdu, Y., Hawthorne, F.C., Stepanov, A.V., Bekenova, G.K. and Kotel’nikov, P.E. (2009a) Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4(OH,F)7. I. A new titanium-silicate mineral from the Verkhnee Espe deposit, Akjailyautas Mountains, Kazakhstan. Mineralogical Magazine, 73, 847–854.
Sokolova, E., Cámara, F., Hawthorne, F.C. and Abdu, Y. (2009b) From structure topology to chemical composition. VII. Titanium silicates: the crystal structure andcrystal chemistry of jinshajiangite. European Journal of Mineralogy, 21, 871–883.
Tê-yü, L., Simonov, V.I. and Belov, N.I. (1965) Crystal structure of rinkite Na(Na,Ca)2(Ca,Ce)4(Ti,Nb) [Si2O7]2(O,F)2F2 . Soviet Physics Doklady, 10, 496–498.
Wilson, A.J.C. (editor) (1992) International Tables for Crystallography. Volume C: Mathematical, physical and chemical tables. Kluwer Academic Publishers, Dordrecht, The Netherlands.

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Anisotropic diplacement factors

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From structure topology to chemical composition. XII. Titanium silicates: the crystal chemistry of rinkite, Na2Ca4 REETi(Si2O7)2OF3

  • F. Cámara (a1) (a2), E. Sokolova (a2) and F. C. Hawthorne (a2)

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