GEOCHEMISTRY STUDY OF GOLD-SILVER DEPOSITS IN THE MIDDLE-UPPER PROTEROZOIC SUBERATHEM IN SOUTHERN QINLING METALLOGENETIC ZONE

来源期刊：中国有色金属学报(英文版)1992年第3期

论文作者：Wang Dongbo

文章页码：11 - 16

Key words：Yangtze Platform; Middle-Upper; Proterozoic Suberathem; Au-Ag deposit assessment physicochemical stable condition; isotopic geochemistry

Abstract: According to the combinations of metallogenetic elements and minerals assemblages, the Au-Ag deposits in the Middle-Upper Proterozoic Suberathem of the middle of northern margin of Yangtze Platform could be classified into four types: (1)Au-Ag-Pb-Zn type; (2)Au-Ag-Te type; (3)Au-quartz vein type; (4)Au-Ag-Pb-Zn-Ba type. The Yangpin formation and the upper Dangyuhe subformation, which belong to Wudangshan group, are regarded as favorable strata for Au-Ag mineralization by systematic assessments for Au-Ag bearing ability of the strata, as well as the felsic rocks of Bikou group. The metallogenetic physicochemical conditions and the stable isotopic compositions (S, Pb, H, O, C) have been studied in this paper. The sources of metallogenetic materials, origins of fluids and genesis of various deposits have also been studied.