|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Physicochemical modeling of ore formation at the gold and volcanogenic massive sulfide deposits in the Northern Uralsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 февраля 2021 г.
- Авторы: Akinfiev N.N., Vikentyev I.V.
- Журнал: Geochemistry International
- Том: 58
- Номер: 13
- Год издания: 2020
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1437
- Последняя страница: 1442
- DOI: 10.1134/S0016702920130029
- Аннотация: A thermodynamic model of the gold–polymetallic volcanogenic massive sulfide ore-forming system, related to the evolution of a shallow acid volcanic chamber of an island arc (Galkinskoe deposit, Northern Urals) was created. The low W/R ratio (<0.25) obtained via modeling indicates slow filtration of fluid upsection in the sequence. In general, the Cu, Zn, Pb, Ag, and Au concentrations in the fluid decrease monotonically with decreasing temperature within the considered temperature range of 600–200°C due to precipitation of solid phases. With a temperature decrease from 550 to 450°C or less, chalcopyrite (±pyrrhotite), sphalerite, and minor galena crystallize successively. The Zn concentration in fluid with decreasing temperature first increases due to incorporation of zinc from host rocks, and at a temperature of <520°C, increases due to the formation of sphalerite in the system.
- Добавил в систему: Викентьев Илья Владимирович