A Commentary of Cryptoexplosion Breccia Type Gold Deposits
Min Qing · Gold Geology · 2002
Cryptoexplosion breccia type gold deposit is one type of deposits which has great economic value in China and aboard.Different cryptoexplosion breccia is the host rock of the gold deposit. The direct reason of the cryptoexplosion is the polyphyly liquid or gas that is heated. The main magmatic cryptoexplosion is gas or magma explosion, next is hydrothermal. Usually gas explosion occuered in early period, next is magma explosion and hydrotnermal is the latest. Hypabyssal superhypabyssal intermediate acidic intrusive rocks is the determinative factor of the former of cryptoexplosion breccia.The cryptoexplosion of gas and liquid is internal cause of cryptoexplosion breccia type and breccia type gold polymetallic deposits, lithogenesis and mineralization were the products of the same geological process of different stage. Different class structure controlled the space of gold deposit output,types of mineralization and ore pattern, mineralization and alteralition had obvious vertical zoning and telescoping in space. This type of gold deposit can be divided into Au Ag and Au Cu series, the deposit series, the scale of deposit and gold rich position can be judged by series quota.