Occurrence state of gold in sulfide in Shaxi copper-gold deposit,Lujiang,Anhui Province
Porphyry deposit is an important source of gold.The key to efficient recovery of gold is to study the types of gold-bearing minerals(such as sulfide)and the gold content in them.Basing on the systematic study on the mineralogy and geochemical composition of altered rocks and industrial-grade ores from the Shaxi deposit,we find that the potassic alteration rocks are more enriched in Si,Fe,K and Na,the prophylitic alteration rocks are more enriched in Al,Fe and Ca,and the phyllic alteration rocks are more enriched in Ca,Na,Fe and K.The main gangue minerals in the ores consist of 37.65 wt%quartz,17.15 wt%albite,11.35wt%alkaline feldspar and 12.87 wt%muscovite.Gold exists in pyrite and chalcopyrite in the form of isomorphic substitution,accounting for 5.98%and 2.15%respectively,and other types account for 91.87%.
Shaxi depositPorphyry copper-gold depositAltered rocksOccurrence states of gold
万方数据
维普
