Genesis of Au-Ag sulfides at the Ulakhan deposit (Russia)

摘要：

Analysis of mineralogical and geochemical features shows evidence that uytenbogaardtite genesis is hypergenic at the Ulakhan epithermal gold-silver deposit (Russia). Thermodynamic modeling demonstrates the possibility of forming uytenbogaardtite from the interaction of native gold, acanthite or Au(Ag)-bearing pyrite with surface waters at 25 ℃ and l bar. The features of Au-Ag sulfide compositions at gold-silver deposits are revealed. Conditions under which uytenbogaardtite and petrovskaite may form in hypergene and low temperature hydrothermal processes are considered.

作者: G.A.Palyanova N.E.Savva

作者单位: Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk North-east Interdisciplinary Scientific Research Institute, Far Eastern Brand of the Russian Academy

会议类型: 国际会议

会议名称: 第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)

会议地点: 昆明

会议语种:英文

页码: 377-380

在线出版日期: 2007-07-31（万方平台首次上网日期，不代表论文的发表时间）