Crystal chemistry and origin of REE-bearing mukhinite from carbonate veins of the Svetlinsky gold deposit, South Urals, Russia

Korinevsky, V.G.; Chukanov, N.V.; Aksenov, S.M.; Korinevsky, E.V.; Kotlyarov, V.A.; Zamyatin, D.A.; Ryanskaya, A.D.; Kolisnichenko, S.V.; Lebedeva, S.M.; Ermolaeva, V.N.

Авторы: Korinevsky V.G., Chukanov N.V., Aksenov S.M., Korinevsky E.V., Kotlyarov V.A., Zamyatin D.A., Ryanskaya A.D., Kolisnichenko S.V., Lebedeva S.M., Ermolaeva V.N.
Журнал: Mineralogical Magazine
Том: 86
Номер: 5
Год издания: 2022
Издательство: Mineralogical Society
Местоположение издательства: United Kingdom
Первая страница: 821
Последняя страница: 833
DOI: 10.1180/mgm.2022.30
Аннотация: A rare earth element (REE)-, Cr- and Mg-bearing variety of the vanadium epidote-group mineral mukhinite occurs in a calcite–dolomitecarbonatite dyke cutting metamorphosed volcano-sedimentary rocks exposed in the walls of the quarry of the Svetlinsky gold deposit,South Urals. This mineral was found in a paragene assemblage including native sulphur, phlogopite and fluorophlogopite, together withaccessory pyrite, other sulfides and sulfosalts, gold, Cr- and V-bearing muscovite, margarite, Cr- and V-bearing dravite, fluoro-tremolite,actinolite, fluoro-pargasite, anhydrite, apatite, uranium hydroxides, V-rich titanite, V- and Nb-rich rutile, spinel and corundum. Thecontents of ΣREE2O3 and V2O3 in mukhinite vary in the ranges of 4.01–9.69 and 5.34–7.46 wt.%, respectively. A Raman spectrumof REE-rich mukhinite is provided. The main schemes of isomorphic substitutions in mukhinite are ΣREE +Mg ↔ Ca + Al andV+Cr ↔ Al. The crystal structure of REE-rich mukhinite has been studied by single-crystal X-ray diffraction analysis. The mineral ismonoclinic, with the space group P21/m, and unit-cell parameters are: a = 8.8972(11) Å, b = 5.6221(6) Å, c = 10.1519(12) Å, β = 115.169°and V = 459.60(11) Å3. The crystal structure of REE-rich mukhinite is similar to that of its synthetic analogue; the refined crystalchemicalformula of the sample studied is (Z = 2): {A1CaA2(Ca0.8REE0.2)}{M1(Al0.95Cr0.05)M2AlM3[(V,Cr)3+0.40Al0.35Mg0.25]}(Si2O7)(SiO4)O(OH).
Добавил в систему: Ермолаева Вера Никитична

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Crystal chemistry and origin of REE-bearing mukhinite from carbonate veins of the Svetlinsky gold deposit, South Urals, Russiaстатья Исследовательская статья

Прикрепленные файлы