摘要
新疆托里县吉尔吾沙克金矿床位于环庙尔沟岩体成矿带西段,是近年来西准地区发现的有较大成矿潜力的金矿床之一。通过电子显微镜、扫描电镜鉴定、X-ray衍射分析、能谱分析等多种分析方法对矿石中金的赋存状态进行研究,结果表明金矿石中金属矿物主要为自然金、赤铁矿、黄铁矿、黄铜矿等;非金属矿物主要为石英、长石等;金的载体矿物主要为赤铁矿、黄铁矿、石英和绿泥石。金矿物以自然金为主,可见少量银金矿、金碲矿、金硒银矿。金的嵌布状态有包裹金、裂隙金和晶间金3种类型。矿石中自然金主要为显微微粒金(0.2~20.0μm),占97.34%,其次是显微细粒及以上金颗粒(>20μm)占2.66%。尽管显微细粒以上金数量不多,但对矿石品位和资源量有重要贡献。
Jierwushake gold deposit,located in the western part of the metallogenic belt around Miaoergou rock mass,is one of the gold deposits with great metallogenic potential found in the west Junggar area in recent years.Through detailed observation of ore samples,the gold occurrence state was studied in this paper by means of comprehensive analysis techniques such as microscope,scanning electron microscope identification,X-ray diffrac⁃tion analysis,energy spectrum analysis,etc.The results showed that the metal minerals were mainly natural gold,hematite,limonite,pyrite,chalcopyrite,etc,the nonmetallic minerals were mainly quartz,feldspar,etc,and the carrier minerals of gold were mainly hematite,limonite,pyrite,quartz and chlorite in this gold deposit.The gold minerals were mainly natural gold,with less silver-gold,gold-tellurium and gold-selenium-silver ore.There were three types of gold dissemination,inclusion gold,fissure gold and intercrystalline gold.The particle size of natural gold were mainly composed of microparticle gold(0.2-20.0μm),about 97.34%,followed by micro fine particles or above(>20μm),about 2.66%.Although the amount of gold above micro fine grain were small,they had made great contribution to ore grade and reserves.
作者
张广平
李假广
李科强
ZHANG Guangping;LI Jiaguang;LI Keqiang(Mineral Resources Exploration Center of Henan Geological Bureau,Zhengzhou 450006,Henan,China)
出处
《矿产勘查》
2023年第4期574-583,共10页
Mineral Exploration
基金
河南省地矿局地质科研基金项目“新疆托里县阿克塔木金矿控矿因素研究”(豫地矿[2020]03号)资助。
关键词
赋存状态
嵌布特征
能谱分析
金矿床
新疆
occurrence state
dissemination characteristics
energy spectrum analysis
gold deposit
Xinjiang
作者简介
第一作者:张广平,男,1979年生,硕士,高级工程师,主要从事矿产勘查与评价工作,E-mail:154648928@qq.com。
