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
许龙 1江涧1
作者信息
- 1. 安徽铜冠(庐江)矿业有限公司,合肥 231561
- 折叠
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20 μm的只占5.36%,大部分都小于20 μm.其中金矿物的嵌布粒度10～20 μm 的占有率为34.68%、5～10 μm的占有率为28.51%,小于5 μm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.
Abstract
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 20 μm,and most of them are less than 20 μm.Among them,the occupancy rate of gold minerals with embedded particle size 10-20 μm is 34.68%,the occupancy rate of gold minerals with embedded particle size 5-10 μm 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.
关键词
沙溪矿床/金独立矿物/斑岩型铜金矿床Key words
Shaxi deposit/Gold-independent mineral/Porphyry copper-gold deposit引用本文复制引用
出版年
2024
NETL
NSTL
万方数据