Hydrothermal Synthesis of Galloepidote—Analogue of Phase Ca2Al2Ga(Si3O12)(OH) from the Tykotlova Gold–Sulfide Occurrence
- Authors: Kovalskaya T.N.1, Varlamov D.A.1, Kotelnikov A.R.1, Chukanov N.V.2, Kalinin G.M.1
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Affiliations:
- Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences
- Institute of Problems of Chemical Physics, Russian Academy of Sciences
- Issue: Vol 57, No 10 (2019)
- Pages: 1095-1106
- Section: Article
- URL: https://journals.rcsi.science/0016-7029/article/view/156332
- DOI: https://doi.org/10.1134/S0016702919100069
- ID: 156332
Cite item
Abstract
Abstract—Solid solutions of the epidote–galloepidote series stable at defined P–T parameters were synthesized for the first time in order to reconstruct the crystallization conditions of gallium epidote analog Ca2Al2Ga(Si3O12)(OH) from ores of the Tykotlova gold–sulfide occurrence. The unit cell parameters of these phases were calculated and their IR and Raman spectra were obtained. It was concluded that gallium is mainly incorporated into M3 site, which makes it possible to consider the galloepidote as independent mineral species. Stable Ga-bearing aluminosilicate and silicate phases were obtained in the Ca–Ga–Al–Fe–Si–O system (analogs of grossular–andradite garnets and Ca feldspars) as the by-products of synthesis.
About the authors
T. N. Kovalskaya
Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences
Author for correspondence.
Email: tatiana76@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region, 142432
D. A. Varlamov
Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences
Author for correspondence.
Email: dima@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region, 142432
A. R. Kotelnikov
Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences
Author for correspondence.
Email: kotelnik@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region, 142432
N. V. Chukanov
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Author for correspondence.
Email: chukanov@icp.ac.ru
Russian Federation, Chernogolovka, Moscow Region, 142432
G. M. Kalinin
Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences
Author for correspondence.
Email: garik@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region, 142432
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