中国地质2011，Vol.38Issue(3)：716-723,8.
陕西庞家河金矿成矿地质特征及成矿物质来源研究
Geological characteristics and ore-forming material sources of the Pangjiahe gold deposit in Shaanxi Province
摘要
Abstract
Ores in the Pangjiahe gold deposit are mainly distributed in upper Devonian Xiadonggou Formation rocks consisting of chloritized sericite phyllite and blastopsammitic quartz sandstone,which constitute a gold-bearing rock series and abundant source layers of gold. Gold ore bodies are mostly preserved in interlayer compresso-crushed zones which assume expansion, contraction, branching, compounding and wavelike bending.Ore bodies exhibit layered and lenticular shapes. Minerals mainly include native gold and electrum. Gold-bearing minerals are pyrite and arsenopyrite. The relevant gold mineralization alterations include pyritization and arsenopyritization. The metallogenic epoch can be mainly divided into three stages, namely quartz-coarse pyrite-hydromica stage, fine pyrite-arsenopyrite stage and pyrite-quartz-carbonate stage. The analyses of δ 34S, δ 18O and stable lead isotope show that Pb of gold ore bodies was derived mainly from the upper crust and partly from the mantle. δ 34S and δ 18O also show that gold ore-forming fluid was derived mostly from the crust and partly from magma in the mantle. In a word, gold ore-forming materials were derived from mixed sources.关键词
地质特征/成矿物质来源/庞家河金矿/陕西省Key words
geological characteristics/ source of ore-forming materials/ Pangjiahe gold deposit/ Shaanxi province分类
天文与地球科学引用本文复制引用
吴孔运,高利鹏..陕西庞家河金矿成矿地质特征及成矿物质来源研究[J].中国地质,2011,38(3):716-723,8.基金项目
陕西省凤县庞家河金矿接替资源勘查项目(200761105)资助. （200761105）
