湘东北正冲金矿床成因：年代学和硫同位素制约

吴华浩,邵拥军,刘清泉,王智琳,张毓策,袁梓焜

Genesis of the Zhengchong Gold Deposit in Northeast Hunan—Constraints from Geochronology and In-situ Sulfur Isotope

Huahao WU,Yongjun SHAO,Qingquan LIU,Zhilin WANG,Yuce ZHANG,Zikun YUAN

图5 正冲金矿床2个成矿阶段黄铁矿显微照片及矿物组合 （a）自形黄铁矿（Py1）含金、黄铜矿和磁黄铁矿包裹体；（b）黄铁矿（Py1）的背散射照片；（c）~（d）绢云母、绿泥石化；（e）、（g）金、黝铜矿充填在毒砂和黄铁矿裂隙中；（f）黄铁矿（Py2a、Py2b）的背散射照片；（h）~（i）闪锌矿、绢云母化Qz-石英；Py1-石英—黄铁矿—自然金阶段黄铁矿；Py2a 、Py2b -石英—黄铁矿—毒砂多金属硫化物阶段黄铁矿；Apy-毒砂；Ccp-黄铜矿；Au-金；Po-磁黄铁矿；Tt-黝铜矿；Sp-闪锌矿；Ser-绢云母；Chl-绿泥石

Fig.5 Micrograph and mineral association of pyrite in two ore-forming stages of Zhengchong gold deposit