Geological Features and Metallegenic Genesis of Huofengya Gold Deposit in Mianluening Region,Shanxi

Huofengya gold deposit occur in upper Proterozoic Bikou group of Mianluening district,Shanxi province.Ductile shear zone is extremely developed in this area,and it always control the gold orebody distribution.There are two main ore types in this area,one is quartz vein type and another is alter-spilite type.This paper focus on the ore-forming geological features,especially the ore-controlling factors,Then it can be concluded that the genesis type is volcanic-sediment and post-altered hydrothermal deposit.