Study on geological features and genesis of the Dongpuzi gold deposit, Liaoning, China

Dongpuzi gold deposit is the first typical subvolcanic gold deposit found in east Liaoning. After preliminary study, Dongpuzi gold deposit is confirmed as a subvolcanic epithmal deposit controlled by a combination of volcanic apparatus and regional faults. Ore bodies are hosted in trachytic porphyry of subvolcanic phase which adjoining the volcanic apparatus and the grade changed greatly. The deposit was mainly formed at hydrothermal metallization stage of the post-volcanic stage. Study on fluid inclusions indicated that the metallogenic temperature of the Dongpuzi deposit ranges from 90～240 ℃,the metallogenic depth is 200～500 m and salinity is 0.35%～6.17%. According to all the evidences mentioned, it's figured that the Dongpuzi deposit belongs to Adulaira-Sericite type subvolcanic gold deposit.