Abstract:

Yongping deposit is located in the Qianshan County, and is the second largest copper-rich polymetallic deposit in Jiangxi Province. Based on the detailed field work in Huoshaogang open-pit, samples collecting, petrographic and mineragraphic determination, SEM and EDS analysis, it can be considered that the ore-hosting strata are composed of interlayered andesitic basalt and andradite skarn, with siliceous rock and schist, layered and lentoid ore body, which indicates the typical oceanic bottom volcanic effusive sedimentary environment. A large number of colloidal pyrite means that there had been large-scale hot water sedimentary. Metamorphism(or skarnization) represented by recrystallization colloidal pyrite and andradite skarn played an important role in the mineralization process. The hydrothermal alteration caused the more concentration of oreforming materials. Besides copper and tungsten, we think, bismuth and indium were concentrate to the lowest level for exploration. We also have found Re-bearing scheelite, Ree-uraninite and a series of tellurium and bismuth minerals, such as native bismuth, bismuthinite, emplectite, Ag-cuprobismutite, argentobismutite, Warren Sharansky ore, tellurobismuthite, pilsenite, iron-copper-tellurium-sulfur-bismuth, Tc-hessite, bismuth-telluride-silver(?) as well as pilsenite-hessite(?).

Key words: copper polymetallic deposit, petrography, mineragraphy, Yongping deposit in Jiangxi Province