Инд. авторы:	Borovikov A.A., Lapukhov A.S., Borisenko A.S., Seryotkin Yu.V
Заглавие:	The Asachinskoe epithermal Au-Ag deposit in southern Kamchatka: physicochemical conditions of formation
Библ. ссылка:	Borovikov A.A., Lapukhov A.S., Borisenko A.S., Seryotkin Yu.V The Asachinskoe epithermal Au-Ag deposit in southern Kamchatka: physicochemical conditions of formation // Russian Geology and Geophysics. - 2009. - Vol.50. - Iss. 8. - P.693-702. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2008.12.011; SCOPUS: 2-s2.0-67649891312;
Реферат:	eng: The Asachinskoe epithermal Au-Ag deposit (southern Kamchatka) is referred to as low-sulfidation in quartz-adularia-sericite in Corbett's classification. Research into fluid inclusions of its minerals gave an insight into the PT-conditions of formation and gas composition of ore-forming fluids as well as the vertical variations in these parameters to a depth of more than 200 m within a 2 km long horizontal site of the deposit ore zone. It is shown that mineral assemblages formed at 320 to <100 °C. Ore-forming hydrothermal solutions were poor in salts (3-9.2 wt.% NaCl equiv.), with NaCl being the main component. Mineral assemblages with high contents of Au crystallized at 250-175 °C. Ore-free quartz-carbonate veins formed at 80-120 °C. High-temperature (300-320 °C) veins also lack ores. Rich gold ores were deposited in the environments where ore-bearing fluids boiled, mixing with meteoric waters. © 2009.
Ключевые слова:	Russian Federation; Kamchatka; Eurasia; silver; P-T conditions; ore-forming fluid; ore deposit; gold; fluid inclusion; epithermal deposit; ore formation; fluid inclusions; Au-Ag deposits;
Издано:	2009
Физ. характеристика:	с.693-702