Applications of Pyrite Thermoelectricity on Xiejiagou Gold Deposit Assessment

Xiejiagou gold deposit, a large scale type deposit found recently, is a transitional type deposit between Jiaojia gold deposit and Linglong gold deposit. Thermoelectricity of pyrite in 22 samples including three types of ores and different levels are studied in this paper. It is showed that the type of electric conduct was mainly N type. Pyroelectricity rate of iron-pyrite in beresite which was formed in early period is the maximum, the pyroelectricity rate of iron-pyrite and cooper-pyrite which was formed in major ore-forming period is reduced, and the rate is the minmum in iron-pyrite-cooper-pyrite quartz vein formed in late period. Accompanying with the phenomena that the occurrence rate of N type pyrite and the pyroelectricity coefficient decreased gradually from 130m to 242m above sea level. It is regarded that orebodies on the superficial part had been eroded. The continuity of the occurrence rate of N type pyrite indicated that there is a large resource potentiality in its deep part.