Жильный кварц из рудопроявлений золота в рифейских отложениях Авзянского рудного района (Южный Урал): минералогические и термокриометрические особенности

A. A. Sharipova, S. V. Michurin, M. T. Krupenin, A. A. Garaeva, Z. A. Kanipova

Аннотация


Жильный кварц из золотосульфидно-кварцевого месторождения Горный Прииск и золотокварцевых малосульфидных рудопроявлений Улюк-Бар и ВосточноАкташское имеет сходные температуры гомогенизации первичных флюидных включений (228–382°С) и солевой состав, в котором преобладают хлориды магния и калия. Солёность варьирует в интервале 5,4–15,8 мас. % NaCl экв. Его формирование обусловлено миграцией магматогенных флюидов в связи с тектонотермальным этапом на границе среднего и позднего рифея. Безрудный жильный кварц из вмещающих рифейских отложений характеризуется более низкими Тгом (128–238°С), преобладанием хлоридов железа в солевом составе и более высокой солёностью (12,9–22,8 мас. % NaCl экв.). В золотосульфидном проявлении Богряшка образование кварца, имеющего Тгом 152–292°С и преобладание хлоридов кальция и магния в составе солей, связаны с дорудным процессом магнезиальножелезистого метасоматоза.

Ключевые слова


Башкирский мегантиклинорий; золото; кварц; флюидные включения; температура гомогенезации; солевой состав растворов

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Литература


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DOI: http://dx.doi.org/10.17072/psu.geol.16.3.216

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