GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS AND GENESIS OF HONGHUAGOU GOLD DEPOSIT,CHIFENG

Honghuagou gold deposit is of auriferous sulfide-quartz type,whose host structure are the fractures striking NNW to S-N and NNE to NE.The wall rock includes amphibolite and diorite porphyrite.The deposit is spacially related to K-feldspaothized metasomatic-remelting granite.Study on lithogeochemistry,microelement,REE and Pb,Sr,S,C,O and H isotopic geochemistry suggests that the ore-forming matter is derived from basemental Archean greenstone formation,mainly diopside-bearing amphibolite and its remelting products,but not genetically related to Mesozoic granite or volcanic rocks.The deposit is Archean greestone-related metasomatic-remelting magma hydrothermal origin.The mineralization is characterized by affinity,inheriting and multistage superimposition.