Abstract
This paper presents the results of mineralogical and crystallographic studies in the first Russian finding of a mineral belonging to the fluoride class, viz., knasibfite, which was found in fumarolic deposits discharged during the Great Tolbachik Fissure Eruption. We investigated its crystal structure to corroborate the fact that knasibfite is orthorhombic, sp. gr. Imm2; a = 17.181 (2), b = 5.537 (4), c = 9.205 (7) Å, V = 875 (1) Å3. The structural features that can be seen in this mineral classify it as belonging to a special group of compounds that has inherited its structure from a high temperature modification or from the medium where it crystallized.
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REFERENCES
Baur, W.H., The geometry of polyhedral distortions. Predictive relationships for the phosphate group, Acta Crystallographica, 1974, Band 30, pp. 1195–1215.
Bolshoe treshchinnoe Tolbachinskoe izverzhenie, 1975–1976 gg., Kamchatka (The Great Tolbachik Fissure Eruption, 1975–1976, Kamchatka), Fedotov, S.A., Ed., Moscow: Nauka, 1984.
Brown, I.D. and Altermatt, D., Bond-valence parameters obtained from a systematic analysis of the Inorganic Crystal structure Database, Acta Crystallographica, 1985, B. 41, pp. 244–247.
Bruker. APEXII and SADABS. Bruker AXS, Madison, Wisconsin, USA. 2003.
Demartin, F., Gramaccioli, C.M., and Campostrini, I., Knasibfite, K3Na4[SiF6][BF4], a new hexafluorosilicate-tetrafluoroborate from La Fossa crater, volcano, Aeolian islands, Italy, Canadian Mineralogist, 2008, vol. 46, pp. 447–453.
Filatov, S.K., Vysokotemperaturnaya kristallokhimiya (High Temperature Crystal Chemistry), Leningrad: Nedra, 1990.
Filatov, S.K. and Vergasova, L.P., Decomposition and homogenization of NaCl@KCl double salts from fumarole incrustations as derived by thermal X-ray analyses, Vulkanol. Seismol., 2002, no. 5, pp. 25–31.
Garavelli, A., Balić-Žunić, T., Mitolo, D., et al., Heklaite, KNaSiF6, a new fumarolic mineral from Hekla volcano Iceland, Mineralogical Magazine, 2010, vol. 74, pp. 147–157.
International Tables for Crystallography, 2006, vol. C, Chapter 9.4, p. 778.
Menyailov, I.A., Nikitina, L.P., and Shapar, V.N., Geokhimicheskie osobennosti eksgalyatsii Bol’shogo treshchinnogo Tolbachinskogo izverzheniya (Geochemical Features of Exhalations during the Great Tolbachik Fissure Eruption), Moscow: Nauka, 1980.
Mitolo, D., Garavelli, A., Balić-Žunić, T., et al., Leonardsenite, MgAlF5(H2O)2, a new mineral species from Eldfell Volcano, Heimaey Island, Iceland, Canadian Mineralogist, 2013, vol. 51, no. 3, pp. 377–386.
Momma, K. and Izumi, F., VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data, J. Applied Crystallography, 2011, vol. 44, pp. 1272–1276.
Naboko, S.I. and Glavatskikh, S.F., Posteruptivnyi metasomatoz i rudoobrazovanie (Posteruptive Metasomatism and Mineralization), Moscow: Nauka, 1983.
Naboko, S.I. and Glavatskikh, S.F., Relicts of posteruptive activity on older cones in the Tolbachik Dol, Kamchatka, Vulkanol. Seismol., 1992, no. 5, pp. 66–86.
Pekov, I.V., Zelenski, M.E., Zubkova, N.V., et al., Krasheninnikovite, KNa2CaMg(SO4)3F, a new mineral from the Tolbachik volcano, Kamchatka, Russia, American Mineralogist, 2012, vol. 97, pp. 1788–1795.
Pekov, I.V., Krzhizhanovskaya, M.G., Yapaskurt, et al., Kononovite, NaMg(SO4)F, a new mineral from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia, European J. Mineralogy, 2015, vol. 27, pp. 575–580.
Pekov, I.V., Zubkova, N.V., Britvin, S.N., et al., Shuvalovite, K2(Ca2Na)(SO4)3F, a new mineral from the Tolbachik volcano, Kamchatka, Russia, European Journal of Mineralogy, 2016, vol. 28(1), pp. 53–62.
Pekov, I.V., Zubkova, N.V., and Agakhanov, A.A., New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VIII. Arsenowagnerite, Mg2(AsO4)F, Mineralogical Magazine, 2017a, vol. 82, pp. 877–888.
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., et al., Axelite, IMA 2017-015a. CNMNC Newsletter no. 38, August 2017, page 1038, Mineralogical Magazine, 2017b, vol. 81, pp. 1033–1038.
Pekov, I.V., Britvin, S.N., Koshlyakova, N.N., et al., Lehmannite, IMA 2017-057a. CNMNC Newsletter no. 46, December 2018, page 1374, Mineralogical Magazine, 2018a, vol. 82, pp. 1369–1379.
Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., et al., Rhabdoborite-(W), IMA 2017-109, CNMNC Newsletter no. 42, April 2018, page 449, Mineralogical Magazine, 2018b, vol. 82, pp. 445–451.
Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., et al., Pliniusite, IMA 2018-031. CNMNC Newsletter no. 44, August 2018, page 1019, Mineralogical Magazine, 2018c, vol. 82, pp. 1015–1021.
Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., et al., Rhabdoborite-(V), IMA 2017-108, CNMNC Newsletter no. 42, April 2018, page 448, Mineralogical Magazine, 2018d, vol. 82, pp. 445–451.
Petricek, V., Dusek, M., and Palatinus, L., Jana 2006. The Crystallographic Computing System, Prague: Institute of Physics, Academy of Sciences of the Czech Republic, 2006.
Serafimova, E.K., Fluorides deposited during posteruptive activities on Kamchatkan volcanoes, Volcanology and Seismology, 1997, vol. 18, no. 5, pp. 571–614.
Starova, G.L., Filatov, S.K., Matusevich, G.L., and Fundamensky, V.S., The crystal structure of vlodavetsite, AlCa2(SO4)2F2Cl · 4H2O, Mineralogical Magazine, 1995, vol. 59, pp. 159–162.
Vergasova, L.P. and Filatov, S.K., A study of volcanogenic exhalation mineralization, J. Volcanol. Seismol., 2016, vol. 10, no. 2, pp. 71–85.
Vergasova, L.P., Semenova, T.F., Epifanova, V.B., et al., Meyailovite Ca4AlSi(SO4)F13·12H2O: A new mineral from volcanic exhalations, Vulkanol. Seismol., 2004, no. 2, pp. 3‒8.
Volkov, S.N., Filatov, S.K., Bubnova, R.S., et al., Thermal expansion and the order–disorder polymorphous transformation in the BaNaMe(BO3)2, Me = Sc, Y borate family, Fizika i Khimiya Stekla, 2012, vol. 38, no. 1, pp. 164‒174.
ACKNOWLEDGMENTS
We thank Senior Researcher V.M. Chubarov (IV&S FEB RAS) for valuable comments on our electron microscope study.
Funding
This work was supported by the Russian Foundation for Basic Research, project no. 18-29-12106. The monocrystal X-ray diffraction studies were performed using equipment available at the X-Ray Diffraction Analysis Resource Center at the St. Petersburg University, the X-ray phase and chemical analyses were carried out at the Analytical Center of the IV&S FEB RAS.
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Translated by A. Petrosyan
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Shablinskii, A.P., Vergasova, L.P., Filatov, S.K. et al. The Discovery of the Mineral Knasibfite K3Na4(SiF6)3(BF4) on Tolbachik Volcano, Kamchatka and Details of its Crystal Structure. J. Volcanolog. Seismol. 14, 177–186 (2020). https://doi.org/10.1134/S0742046320030069
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DOI: https://doi.org/10.1134/S0742046320030069