湖北郧西县响水洞金矿床矿石特征及金的赋存状态  

Study of ore features and gold occurrence of Xiangshuidong Gold Deposit in Yunxi County,Hubei Province

作　　者：魏均启[1] 鲁力[1] 边智虹 吴健[1] 王芳[1] 朱丹[1] 周亮亮[1] 

机构地区：[1]湖北省地质实验测试中心,国土资源部稀土稀有稀散矿产实验技术重点实验室

出　　处：《黄金》2015年第9期24-27,共4页Gold

摘　　要：采用光薄片鉴定、人工重砂分析、化学成分分析、电子探针波谱分析等技术方法,查明了响水洞金矿床矿石类型以石英脉型矿石为主,其中黄铁矿为金的主要载体矿物,黄铜矿、磁黄铁矿为次要载体矿物,石英为主要的脉石矿物,绿泥石和方解石等为次要脉石矿物。矿石的构造类型主要为脉状—细脉状、浸染状、块状、角砾状等。金矿物主要以银金矿形式存在,呈独立矿物形态,粒度主要集中于0.01~0.075 mm。矿石的结构构造有利于各矿物的单体解离,在细磨条件下大部分金矿物解离呈单体金,综合回收率90.84%以上,矿石的性质总体对选矿有利。Technical methods of thin sections determination,artificial heavy concentrate analysis,chemical composition analysis and electronic probe spectrum analysis find that the principal gold ore type in Xiangshuidong Gold Deposit is quartz vein. The gold-bearing minerals are dominated by pyrite followed by chalcopyrite and pyrrhotite. Gangue minerals are mainly quartz,and then chlorite and calcite. Ores are in the form of veinlet structures,disseminated structures,massive structures and brecciated structures. Gold minerals are present in an independent mineral form of electrum with sizes ranging generally from 0. 010 mm to 0. 075 mm. Ore textures and structures facilitate individual mineral separation,and most of the gold minerals are likely disintegrated to native gold after finely grinding. The overall recovery is more than 90. 84 % for ores in this deposit,meaning favorable ore-dressing conditions.

关 键 词：矿石特征 赋存状态 响水洞金矿床 

分 类 号：TD91[矿业工程—选矿] P616.4[天文地球—矿床学]