摘要
通过显微镜观察、化学分析、能谱分析等综合分析技术,对西藏山南某金矿床金的赋存状态进行了详细研究。结果表明:该矿床矿石中金以自然金为主,主要分布于石英脉中,次要分布于角砾中;石英脉中金以分布于石英粒间的明金为主,角砾中金多为细粒金—显微金,个别为次显微金;嵌布状态以粒间金为主,而裂隙金、包裹金较少;载金矿物主要为石英、毒砂、臭葱石、黄铁矿、闪锌矿。对金的赋存状态研究可为探讨矿床成因及选矿工艺设计提供依据。
Detailed study was carried out on the characteristics of gold-bearing minerals and gold occurrence state in a gold deposit from Shannan,Tibet by comprehensive analysis methods such as microscope observation,chemical analysis and energy spectrum analysis.The results show that the gold in the ore is mainly native gold and mostly is distributed in quartz veins followed by breccia;the gold in quartz veins is dominated by visible gold distributed between quartz grains;the gold grain size in breccia is mostly fine-microscopic gold,some occur as submicroscopic gold.The dissemination status is dominated by intergranular gold,and fissure gold and encased gold are relative rare;the main gold-bearing minerals are quartz,arsenopyrite,scorodite,pyrite and sphalerite.The study on the gold occurrence state provided basis for the discussion of deposit genesis and the design of mineral processing processes.
作者
李小菲
宁新霞
李英
闫师攀
Li Xiaofei;Ning Xinxia;Li Ying;Yan Shipan(Xi an Northwest Geological Institute of Nonferrous Metals Co.,Ltd.;College of Life Sciences,Northwest A&F University)
出处
《黄金》
CAS
2019年第11期17-21,共5页
Gold
关键词
石英脉型金矿石
金矿物
自然金
赋存状态
西藏山南
quartz vein type gold ore
gold mineral
native gold
occurrence state
Shannan
Tibet
作者简介
李小菲(1986—),女,陕西西安人,工程师,硕士,从事地质勘查、岩矿工作,西安市西影路25号,西安西北有色地质研究院有限公司,710054,E-mail:88485124@qq.com。
