Type of gold and silver deposits in Table 1 below:
Table 1 Types of gold and silver deposits in China
Deposit type | Surrounding rock type | Major metal minerals and gangue minerals | Instance |
Gold-bearing quartz veins | granite | Metallic minerals pyrite, brass-based mining. The gangue minerals are mainly quartz, feldspar and calcite . Gold and silver are present in natural gold, silver gold ore, gold and silver mines | Zhaoyuan Gold Mine |
Broken belt altered rock | 绢岩岩化花岩分岩岩 | Metallic minerals are mainly pyrite and chalcopyrite. Gangue minerals quartz, sericite based. Gold and silver are silver and gold mines, natural gold exists | Xincheng Gold Mine |
Gold-containing polymetallic sulfide ore quartz vein | Plagiogneiss, plagioclase amphibolite | Metallic minerals pyrite, chalcopyrite, galena based. The gangue minerals are mainly quartz and feldspar. Gold is naturally symbiotic with sulfide | Jiapigou Gold Mine |
Gold-bearing quartz vein oxidized ore | Gneiss | Metal minerals are mainly limonite and hematite. The gangue minerals are mainly quartz. Gold is natural and symbiotic with quartz or limonite | Bupleurum, Zhangjiakou Gold Mine |
Alluvial sand deposit | Gold naturally associated minerals are magnetite, iron titanium, rutile, garnet, zircon, hematite, monazite, etc. | Hani River Gold Mine |
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