新疆维权银多金属矿床富砷矿物特征及意义  

Characteristics and significance of arsenic-rich mineralin Weiquan silver-polymetallic deposit,Xinjiang

作　　者：孟庆鹏 姚瑶 况守英 马龙 MENG Qingpeng;YAO Yao;KUANG Shouying;MA Long(Xinjiang Mineral Experiment Research Institute,Urumqi 830000,Xinjiang,China)

机构地区：[1]新疆矿产实验研究所,新疆乌鲁木齐831000

出　　处：《矿产与地质》2020年第1期76-80,共5页Mineral Resources and Geology

基　　金：国土资源部公益性行业科研专项经费项目“新疆典型矿床岩石矿物鉴定图册”(编号:201211043)资助。

摘　　要：新疆维权银多金属矿床为新疆首次发现的独立银矿床,通过偏光显微镜和电子探针等大型仪器,对矿石中的富砷矿物斜方砷铁矿与毒砂进行分析。结果表明:银矿物多与斜方砷铁矿相伴生,毒砂的富集要早于银矿物和斜方砷铁矿,指示在矿床成矿阶段存在一个贫硫阶段和一个富硫阶段,对矿区成矿期次进行了划分,对矿床成因进行了探讨。Weiquan silver polymetallic deposit is the first independent silver deposit discovered in Xinjiang.In this study,the arsenic-rich minerals,including lollingite and arsenopyrite,in the ore are analyzed by polarized light microscopy and electron probe method.The result shows that silver minerals are associated with lollingite minerals.The enrichment of arsenopyrite is earlier than that of silver mineral and lollingite.It is indicated that there are a poor-sulfur stage and a rich-sulfur stage in the ore-forming period.The mineralization period is divided into several stages and the deposit genesis is also discussed in the paper.

关 键 词：维权银多金属矿 富砷矿物 成矿期次 矿床成因 

分 类 号：P618.52[天文地球—矿床学] P575[天文地球—地质学]