Abstract:The Jinya gold deposit is a typical Carlin-type gold deposit, and it is one of the first discovered Carlin-type gold deposits in China. The gold deposit is mainly hosted in the Middle Triassic fine-sandstones, siltstone, argillacoue siltstone. The deposit is obviously controlled by the NS-trending secondary fault in the northeast of NE-trending Guixi-Baise fault. Field work, petrography, electron microprobe date indicate that hydrothermal minerals in Jinya gold deposit could be classified into at least two forming stages. Most of these minerals have characteristic of multiple generations. There is a negative correlation between As and S content in the pyrites and arsenopyrite. The correlation between As and Au is no obvious. Au and As contents in the pyrite formed in different stage have regular patterns. The contents of Au and As in the sedimentary pyrite are low. In contrary, these contents in the diagenesis pyrite are much higher. Hydrothermal pyrite developed in every stage of ore-forming period has abundant Au and As. The varing contents of Au and As in the relict pyrites in the core of banded pyrite which indicate that some Au and As have been activated and migrated in some test area during the later hydrothermal activity. Analysis of Co and Ni in pyrite suggest that the pyrites in ore bodies are hydrothermal pyrite, the pyrites in adjacent rocks are sedimentary pyrite, the pyrites in alteration wall-rock comprising both of them. The pyrite(Py2?) with the characteristics of hydrothermal pyrite and sedimentary pyrite in the ore of banded pyrite probably due to the pyrites in the stage of sedimengtary and diagenesis derived from hydrothermal-superimposing in later hydrothermal activity. Its Au and As contents are less than the other parts. It is possibly show that Au and As in the sedimentary pyrite resolved and migrated during the later hydrothermal activity. That caused the lower content of Au and As in the core of the pyrite. The pyrite and arsenopyrite in the diagenesis contained some Au, and S of the ore fluid derived from the strata that it flows through, which suggests the ore-forming material major derived from the country rocks. However, according to the previous analysis, there may be igneous rocks containing Au rise and migration along the deep fracture. Based on the above data, the mineralization may be divided into three stages: The Au pre-enrichment in the diagenetic stage→The fulid of the mineralization period extracted the ore-forming material which pre-enriched in the first stage, and it rose and migrated along the deep fault and fracture zone. The ore bearing fluid unloads in syn-sedimentary faults, econdary fault and favorable lithology sites, and made the wall rock altered→After the metallogenic epoch, the ore bodies form the oxidized ore by weathering and leaching under acidic conditions.