云南勐满金矿硅质岩特征及其与金矿化关系  

Siliceous rocks’ characteristic and its relationship with gold mineralization of the Mengman gold deposit in Yunnan

作　　者：徐学员 高超 

机构地区：[1]内蒙古第十地质矿产勘查开发院,赤峰024000 [2]内蒙古矿业开发有限责任公司,呼和浩特010020

出　　处：《西部资源》2013年第2期179-182,共4页Western Resources

摘　　要：云南勐满金矿位于临沧——勐海花岗岩体西接触带之小南婆——西定铁金多金属成矿区,矿区内硅质岩发育。显微镜下观察,硅质岩无明显的生物迹象。而化学成分分析显示,W(Al)/W(Al+Fe+Mn)值远大于0.35,不具有热水沉积作用典型的高铁锰特征。综合各现象可初步判定硅质岩属交代沉淀成因。硅质岩的形成与金矿化之间存在密切的联系,因而可将硅质岩作为金矿勘探开发的一条重要找矿标志。The Mengman gold deposit in Yunnan is in the Xiaonaipo-Xiding iron and gold polymetallic metallogenesis province on the west contact strip of Lincang-Menghai granite mass. Siliceous rocks develop in the Mengman gold deposit. Under the microscope, we can’t find obvious biological signs. And the chemical composition analysis, w（Al）/w（Al＋Fe＋Mn） values than 0.35,no hot water sedimentation typical characteristics that the content of iron and manganese is high. Considering all phenomena, we can preliminary that siliceous rocks are formed in the metasomasis. Between siliceous rocks and the formation of gold mineralization exists close contacts, thus siliceous rocks can be as an important exploration of the signs in gold exploration and development.

关 键 词：勐满金矿 硅质岩 热泉型金矿 热水沉积作用 

分 类 号：P618.51[天文地球—矿床学]