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Crystal chemistry of turkestanite, Dara-i-Pioz massif, Tajikistan

Published online by Cambridge University Press:  19 January 2023

Ekaterina Kaneva Open the ORCID record for Ekaterina Kaneva [Opens in a new window] ,
Tatiana Radomskaya Open the ORCID record for Tatiana Radomskaya [Opens in a new window] ,
Olga Belozerova  and
Roman Shendrik Open the ORCID record for Roman Shendrik [Opens in a new window]
Ekaterina Kaneva*
Affiliation:
Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky 1A, 664033 Irkutsk, Russia
Tatiana Radomskaya
Affiliation:
Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky 1A, 664033 Irkutsk, Russia
Olga Belozerova
Affiliation:
Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky 1A, 664033 Irkutsk, Russia
Roman Shendrik
Affiliation:
Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky 1A, 664033 Irkutsk, Russia
*
*Author for correspondence: Ekaterina Kaneva, Email: kev604@mail.ru
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Abstract

The results of combined single-crystal X-ray diffraction, electron probe microanalysis, Fourier microspectroscopy, and photoluminescence spectroscopy study of crystals of turkestanite from the Dara-i-Pioz deposit, Tien-Shan Mountains, Tajikistan are reported. It is a single-layer sheet silicate belonging to the ekanite group with a steacyite structural type. Averaged major-element analysis provided (wt.%): K2O 4.13(6), CaO 8.1(1), Na2O 2.3(1), ThO2 25.8(4), UO2 3.6(4) and SiO2 55.9(1). The averaged crystal-chemical formula for the studied turkestanite is (Th0.84U0.12)Σ0.96(Ca1.24Na0.65)Σ1.89(K0.75☐0.25)Σ1.00Si8O19.72(OH)0.28. Single-crystal structural refinement of turkestanite gave tetragonal, space group P4/mcc, a = 7.5708(3) Å, c = 14.7300(11) Å, V = 844.27(6) Å3 and Z = 2. Luminescence of the uranyl ion (UO2)2+ is observed in turkestanite. In the excitation spectrum, the bands corresponding to a charge transfer transition from the 2p states of the ligand to the 5f state of uranium were found.

Keywords

turkestanitesheet silicatescrystal chemistryphotoluminescenceDara-i-Pioz massifTajikistanekanite groupuranyl
Type
Article
Information
Mineralogical Magazine , Volume 87 , Issue 2 , April 2023 , pp. 252 - 261
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of The Mineralogical Society of Great Britain and Ireland

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Footnotes

Associate Editor: Elena Zhitova

References

Agakhanov, A.A., Pautov, L.A., Uvarova, Yu.A., Sokolova, E., Hawthorne, F.C., Karpenko, V.Yu., Dusmatov, V.D. and Semenov, E.I. (2004) Arapovite, (U,Th)(Ca,Na)2(K1–x☐x)Si8O20⋅nH2O – new mineral. New Data on Minerals, 39, 14–20.Google Scholar
Bartlett, J.R. and Cooney, R.P. (1989) On the determination of uranium oxygen bond lengths in dioxouranium(VI) compounds by Raman spectroscopy. Journal of Molecular Structure, 193, 295–300.CrossRefGoogle Scholar
Bell, J.T. and Biggers, R.E. (1968) Absorption spectrum of the uranyl ion in perchlorate media III. Resolution of the ultraviolet band structure; some conclusions concerning the excited state of UO22+. Journal of Molecular Spectroscopy, 25, 312–329.Google Scholar
Betteridge, P.W., Carruthers, J.R., Cooper, R.I., Prout, K. and Watkin, D.J. (2003) Crystals version 12: Software for guided crystal structure analysis. Journal of Applied Crystallography, 36, 1487.CrossRefGoogle Scholar
Bruker APEX2 (2014) Version 2014.11-0. Bruker AXS Inc., Madison, WI, USA.Google Scholar
Burns, P.C. (1999) The crystal chemistry of uranium. Pp. 23–90 in: Uranium: Mineralogy Geochemistry and the Environment (Burns, P.C. and Finch, R., editors). Reviews in Mineralogy and Geochemistry, 38. Mineralogical Society of America: Washington, D.C.CrossRefGoogle Scholar
Cadoni, M. and Ferraris, G. (2011) Synthesis and crystal structure of Na2MnSi4O10: relationship with the manaksite group. Rendiconti Lincei. Scienze Fisiche e Naturali, 22, 225–234.CrossRefGoogle Scholar
CrysAlis PRO (2018) Version 1.171.35.21. Agilent Technologies Ltd., Yarnton, UK.Google Scholar
Estrade, G., Salvi, S., Béziat, D., Rakotovao, S., and Rakotondrazafy, R. (2014) REE and HFSE mineralization in peralkaline granites of the Ambohimirahavavy alkaline complex, Ampasindava peninsula, Madagascar. Journal of African Earth Sciences, 94, 141–155.CrossRefGoogle Scholar
Estrade, G., Salvi, S. and Béziat, D. (2018) Crystallization and destabilization of eudialyte-group minerals in peralkaline granite and pegmatite: a case study from the Ambohimirahavavy complex, Madagascar. Mineralogical Magazine, 82, 375–399.CrossRefGoogle Scholar
Faiziev, A.R. (2016) Comparative mineralogical characteristics of alkaline massif Dunkeldyk and Darai-Piez (Tajikistan). Proceedings of the Russian Mineralogical Society, 145, 20–29.Google Scholar
Faiziev, A.R., Gafurov, F.G. and Sharipov, B.N. (2010) Carbonatites of the Dara-i-Pioz alkaline massif, Central Tajikistan, and their compositional features. Geochemistry International, 48, 1084–1096.CrossRefGoogle Scholar
Gagnè, O.C. and Hawthorne, F.C. (2015) Comprehensive derivation of bond-valence parameters for ion pairs involving oxygen. Acta Crystallographica, B71, 562–578.Google Scholar
Handke, M. and Jastrzębski, W. (2005) Vibrational spectroscopy of the double 4-, 6-membered rings in silicates and siloxanes. Journal of Molecular Structure. 744, 671–675.CrossRefGoogle Scholar
Hawthorne, F.C., Uvarova, Yu.A. and Sokolova E. (2019) A structure hierarchy for silicate minerals: sheet silicates. Mineralogical Magazine, 83, 3–55.CrossRefGoogle Scholar
Hazen, R.M., Ewing, R.C. and Sverjensky, D.A. (2009) Evolution of uranium and thorium minerals. American Mineralogist, 94, 1293–1311.CrossRefGoogle Scholar
Horváth, L. and Horváth, E. (2012) Turkestanite from Mont Saint-Hilaire. Micronews, 46, 22–25.Google Scholar
Jin, G.B. and Soderholm, L. (2015) Solid-state syntheses and single-crystal characterizations of three tetravalent thorium and uranium silicates. Journal of Solid State Chemistry, 221, 405–410.CrossRefGoogle Scholar
Kabalov, Yu.K., Sokolova, E.V., Pautov, L.A. and Schneider, J. (1998) Crystal structure of a new mineral turkestanite: a calcium analogue of steacyite. Crystallography Reports, 43, 584–588.Google Scholar
Kaneva, E., Bogdanov, A. and Shendrik, R. (2020) Structural and vibrational properties of agrellite. Scientific Reports, 10, 15569.CrossRefGoogle ScholarPubMed
Knyazev, A.V., Chernorukov, N.G. and Komshina, M.E. (2012) Synthesis and study of some thorium-containing silicates of the ekanite group. Radiochemistry, 54, 431–434.CrossRefGoogle Scholar
Knyazev, A.V., Komshina, M.E., Zhidkov, A.V. and Plesovskikh, A.S. (2013) Crystal structure and thermal expansion of RbNaCaTh(Si8O20). Russian Journal of Inorganic Chemistry, 58, 1172–1176.CrossRefGoogle Scholar
Knyazev, A.V., Smirnova, N.N., Manyakina, M.E., Shushunov, A.N., Bulanov, E.N., Lelet, M.I. and Savushkin, I.A. (2016) Thermodynamic properties of synthetic turkestanite KNaCaTh(Si8O20). The Journal of Chemical Thermodynamics, 92, 8–11.CrossRefGoogle Scholar
Lavarde, S., Chiappino, L., Alves, P. and Astolfi, M. (2019) Les Minéraux du massif volcanique du Fogo, Ile de São Miguel, Açores, Portugal. Le Règne Mineral, 145, 30–50.Google Scholar
Livingstone, A., Atkin, D., Hutchison, D. and Al-Hermezi, H.M. (1976) Iraqite, a new rare-earth mineral of the ekanite group. Mineralogical Magazine, 40, 441–445.CrossRefGoogle Scholar
Mann, J.M., McMillen, C.D. and Kolis, J.W. (2015) Crystal chemistry of alkali thorium silicates under hydrothermal conditions. Crystal Growth & Design, 15, 2643–2651.CrossRefGoogle Scholar
McCusker, L.B., Liebau, F. and Engelhardt, G. (2001) Nomenclature of structural and compositional characteristics of ordered microporous and mesoporous materials with inorganic hosts. Pure and Applied Chemistry, 73, 381–394.CrossRefGoogle Scholar
Momma, K. and Izumi, F. (2011) VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data. Journal of Applied Crystallography, 44, 1272–1276.CrossRefGoogle Scholar
Nasdala, L., Sameera, K.A., Fernando, G.W.A., Wildner, M., Habler, G., Erlacher, A. and Škoda, R. (2022) The shape of ekanite. Gems & Gemology, 58, 156–167.CrossRefGoogle Scholar
Natrajan, L.S. (2012) Developments in the photophysics and photochemistry of actinide ions and their coordination compounds. Coordination Chemistry Reviews, 256, 1583–1603.CrossRefGoogle Scholar
Pautov, L.A., Agakhanov, A.A., Sokolova, E.V. and Kabalov, Yu.K. (1997) Turkestanite Th(Ca,Na)2(K1–x☐x)Si8O20⋅nH2O – a new mineral. Proceedings of the Russian Mineralogical Society, 126, 45–55.Google Scholar
Perrault, G. and Richard, P. (1973) L’ekanite De Saint-Hilaire, P.Q. The Canadian Mineralogist, 11, 913–929.Google Scholar
Perrault, G. and Szymański, J.T. (1982) Steacyite, a new name, and a re-evaluation of the nomenclature of “ekanite”-group minerals. The Canadian Mineralogist, 20, 59–63.Google Scholar
Petersen, O.V., Johnsen, O. and Micheelsen, H.I. (1999) Turkestanite from the Ilimaussaq alkaline complex, south Greenland. Neues Jahrbuch für Mineralogie Monatshefte, 9, 424–432.Google Scholar
Reguir, E.P., Chakhmouradian, A.R. and Evdokimov, M.D. (1999) The mineralogy of a unique baratovite- and miserite-bearing quartz – albite – aegirine rock from the Dara-i-Pioz complex, Northern Tajikistan. The Canadian Mineralogist, 37, 1369–1384.Google Scholar
Richard, P.P. and Perrault, G. (1972) Structure crystalline de l'ekanite de St.-Hilaire, P.Q. Acta Crystallographica, B28, 1994–1999.CrossRefGoogle Scholar
Szymański, J.T., Owens, D.R., Roberts, A.C., Ansell, H.G. and Chao, G.Y. (1982) A mineralogical study and crystal-structure determination of nonmetamict ekanite, ThCa2Si8O20. The Canadian Mineralogist, 20, 65–75.Google Scholar
Uvarova, Yu.A., Sokolova, E., Hawthorne, F.C., Agakhanov, A.A. and Pautov, L.A. (2004) The crystal structure of arapovite U4+(Ca,Na)2(K1–x☐x)[Si8O20], x ≈ 0.5, a new mineral species of the steacyite group from the Dara-i-Pioz moraine, Thien-Shan mountains, Tajikistan. The Canadian Mineralogist, 42, 1005–1011.CrossRefGoogle Scholar
Vilalva, F.C.J. and Vlach, S.R.F. (2010) Major- and trace-element composition of REE-rich turkestanite from peralkaline granites of the Morro Redondo Complex, Graciosa Province, south Brazil. Mineralogical Magazine, 74, 645–658.CrossRefGoogle Scholar
Yang, S.-Y., Zhang, R.-X., Jiang, S.-Y. and Xie, J. (2018) Electron probe microanalysis of variable oxidation state oxides: protocol and pitfalls. Geostandards and Geoanalytical Research, 42, 131–137.CrossRefGoogle Scholar
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