东昆仑黄龙沟金矿床矿石矿物学研究  

The mineral characteristics of HuangLonggou gold deposit in the East KunLun

作　　者：马忠元 曹光远[2] 马成兴 刘勇 杨子颖 孙非非 郝艳 马富盛 

机构地区：[1]青海省第三地质矿产勘查院,青海西宁810029 [2]中化地质矿山总局地质研究院,河北涿州072754

出　　处：《青海大学学报（自然科学版）》2015年第2期61-66,共6页Journal of Qinghai University(Natural Science)

摘　　要：通过对黄龙沟地区蚀变岩型金矿床矿石矿物学特征的研究,初步划分为3个成矿阶段,其中第一阶段为金的主要富集阶段,金以可见金的方式赋存在于毒砂、黄铁矿和石英中,该阶段金属硫化物的生成顺序为:闪锌矿—黄铜矿—磁黄铁矿—毒砂—黄铁矿。根据金属硫化物形成的相变图解,推测由不可见金到可见金形成过程中热液温度有一定幅度升高,硫逸度也随之升高,毒砂由富硫向富砷变化。Based on the analysis of mineral characteristic of the altered rock type gold -deposition , we concluded that the gold -deposition went through three mineralization stages at huanglonggou ar-ea.The first one was the gold concentrated stage .The gold ore was visible and existed in arsenopy-rite, pyrite and quartz .The sequence of metal sulfides genesis was sphalerite -chalcopyrite-pyr-rhotite-aresenopyrite-pyrite.According to the phase diagram of sulfuret forming ,the hydrothermal temperature maybe rise from invisible to visible during gold forming .The sulfur fugacity also in-creased with arsenopyrite changed from abundant sulfur to abundant arsenic .

关 键 词：黄龙沟金矿 成矿阶段 毒砂与黄铁矿 东昆仑 

分 类 号：P57[天文地球—矿物学]