SILVER MINERALS AND PARAGENESIS IN THE KANGJIAWAN Pb–Zn–Ag–Au DEPOSIT OF THE SHUIKOUSHAN MINERAL DISTRICT, HUNAN PROVINCE, CHINA

The Kangjiawan deposit, in the Shuikoushan district, Hunan Province, China, is a representative hydrothermal Pb–Zn–Ag– Au deposit in this region. The orebodies consist mainly of pyritic Pb–Zn ores. Silver minerals are associated with Pb–Zn mineralization. Ag-bearing Pb–Zn ores in the deposit are characterized by Ag > Cu > Sb content. Silver occurs mainly as silver minerals, such as minor argentian tetrahedrite, freibergite and abundant polybasite–arsenpolybasite, pearceite and pyrargyrite– proustite, and all are hosted in galena. The assemblages of silver minerals found in the major orebodies change from the southern to the northern part, from argentian tetrahedrite + freibergite + pearceite + arsenpolybasite + pyrargyrite–proustite in the south to polybasite–arsenpolybasite + pyrargyrite, and to pyrargyrite in the north.