金平平安寨铜金多金属矿平安寨矿段金矿石特征  

Characters of Au Ore of the Ping’anzhai Ore Block of the Ping’anzhai Cu-Au Polymetallic Deposits, in Jinping,Yunnan

作　　者：李双江 王炳华 王超[4] LI Shuang-jiang;WANG Bing-hua;WANG Chao(School of Civil Engineering,Southwest Jiaotong University,Chengdu 611756;Geological Society of Sichuan Province,Chengdu 610081;Yunnan Geological Survey,Kunming 650051;Sichuan Institute of Uranium Geological Survey,Chengdu 610061)

机构地区：[1]西南交通大学,成都611756 [2]四川省地质学会,成都610081 [3]云南省地质调查局,昆明650051 [4]四川省核工业地质调查院,成都610083

出　　处：《四川地质学报》2019年第2期263-266,共4页Acta Geologica Sichuan

摘　　要：平安寨铜金多金属矿位于哀牢山多金属成矿带南段,矿床受基性、中碱性岩体控制,矿体多产于喜山期碱性正长岩带,或岩体与断裂交汇复合部位。通过对矿区平安寨矿段金矿石研究认为:研究区平安寨矿段金矿石主要以矽卡岩型金矿石为主,金矿石多呈褐色、土黄色,泥质结构或微晶结构,块状构造、角粒状构造、浸染状构造为主,矿石中的金元素主要以次显微状或微粒游离状自然金形式赋存于黄铁矿或矽卡岩中,少量以微细粒包裹体或类质同象的形式赋存在高岭石、绢云母等泥质中。金颗粒较小,包裹金也较少,易于氰化浸出。矿床平均品位为3.75g/t,总体属中等品位矿石。The Ping'anzhai Cu-Au polymetallic deposit lies in the south section of the Ailaoshan polymetallic metallogenic belt. The gold ore in Ping'anzhai ore block is mainly confined to in skarn and is mostly brown and yellow and has pelitic or microcrystalline texture, massive, breccia and impregnated structure. Gold occurs mainly as submicroscopic or particulate free natural gold in pyrite, secondly, as micro-grained inclusions or isomorphism in kaolinite and sericite. The gold is easy cyanide leaching. The average grade of the Au ore is 3.75g/t Au.

关 键 词：平安寨 金 矿石特征 矽卡岩 

分 类 号：P618.51[天文地球—矿床学]