云南个旧大白岩铜锡矿床铜锡与共伴生组分赋存状态研究

Study of Copper,Tin and Coexisting Ingredient Occurrence of Dabaiyan Copper-Tin Polymetallic Ore Deposit in Gejiu,Yunnan Province,P.R.China

位于个旧市南部的卡房矿田大白岩铜锡矿是个旧地区重要的铜矿产出地段,共伴生锡、金、银、钨、铋等有益组分。通过光薄片鉴定、电子探针测试和人工重砂分析发现,大白岩铜锡矿铜主要赋存状态为黄铜矿,其次为银黝铜矿和黝锡矿;锡主要以锡石,黝锡矿形式存在;伴生组分钨主要为白钨矿,铋元素以辉铋矿和自然铋存在,硫主要为磁黄铁矿、黄铁矿,其次为黄铜矿等硫化物,磁黄铁矿和黄铜矿中含有微量金。

Copper-tin polymetallic ore deposit in Gejiu,Yunnan Province is one of the most important tin habitats in china.With microslide,heavy mineral analysis and EPMA,following results were acquired as follows：the main composition of copper in Dabaiyan is chalcopyrite with some aftonite and kassiterolamprite;the main composition of tin is cassiterite with some kassiterolamprite;the main composition of tungsten mineral are scheelite,bismuthglance and bismuth;molybdenum exists as molybdenite;and pyrrhotine and chalcopyrite contain trace gold.