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