安徽庐江沙溪铜金矿床中金的独立矿物研究  

Study on Independent Mineral of Gold in Shaxi Copper-gold Deposit in Lujiang,Anhui Province

作　　者：许龙 江涧 Xu Long;Jiang Jian(Anhui Province Tongguan(Lujiang)Mining Co.,Ltd.,Hefei 231561,China)

机构地区：[1]安徽铜冠(庐江)矿业有限公司,合肥231561

出　　处：《青海科技》2024年第2期104-107,共4页Qinghai Science and Technology

基　　金：铜陵有色金属集团控股有限公司2023年第一批科技实施计划项目“沙溪铜矿铜泉山和凤台山矿段伴生金分布规律和赋存状态研究”。

摘　　要：金是重要紧缺的战略性矿产资源,斑岩型矿床是重要的矿产金来源。本研究选择安徽庐江沙溪斑岩型铜金矿床为研究对象,通过开展该矿床内矿石中金独立矿物的岩相学和成分分析,发现矿石中金的独立矿物为碲金矿、银金矿等,主要存在于石英硫化物脉中,与黄铜矿、斑铜矿、石英、磁铁矿等共生。金矿物(包括碲金矿、银金矿等)的嵌布粒度均细,大于20μm的只占5.36%,大部分都小于20μm。其中金矿物的嵌布粒度10~20μm的占有率为34.68%、5~10μm的占有率为28.51%,小于5μm的自然金的占有率为31.45%。研究发现沙溪矿床中金与铜关系密切,载金矿物主要以颗粒较小的包裹矿物产出,可作为伴生元素开采,研究结果为沙溪矿床中金的回收利用提供了一定参考依据。Gold is an important strategic mineral resource in short supply,and porphyry deposits are an important source of mineral gold.This study selected the Shaxi porphyry copper-gold deposit in Lujiang,Anhui Province as the research object.Through petrographic and compositional analysis of the gold-independent minerals in the ore,it is found that the independent gold minerals are tellurite,argenteau,etc.,which mainly existed in the quartz sulfide veins and were associated with chalcopyrite,bornite,quartz,and magnetite.The size of gold-independent is fine,and only 5.36% are greater than 20μm,and most of them are less than 20μm.Among them,the occupancy rate of gold minerals with embedded particle size 10-20μm is 34.68%,the occupancy rate of gold minerals with embedded particle size 5-10μm is 28.51%,and the occupancy rate of natural gold less than 5μm is 31.45%.The study found that gold is closely related to copper,and the gold-bearing minerals are mainly produced as wrapped minerals with smaller particles.This suggests that the gold can be mined as associated elements.The study results provide a basis for the recycling of gold in the Shaxi deposit.Keywords:Shaxi deposit;Gold-independent mineral;Porphyry copper-gold deposit.

关 键 词：沙溪矿床 金独立矿物 斑岩型铜金矿床 

分 类 号：P618.51[天文地球—矿床学]