Genesis Analysis of Pb-Zn-Ag Polymetallic Deposit of Liang Jia Gou, Chicheng County

摘要

The Liang Jiagou Pb-Zn-Ag poltmetalic ore deposit is located in yangtian village of Chicheng county, dividing into three ore section of liangjiagou sliver mine, hongtongdong, xiaopuzihuoshigou, In ore bodies, near-bedded occur in the dolostone of Wumishan group of the middle Proterozoic jixian series. This paper takes the Liangjia ditch Silver adit mountain as an example, on the basis of field observation and thin section and polished section microscope observation, judging by the chemical analysis of macroelement, trace and rare earth element for rock(ore) samples, combining with the test result of fluid inclusion composition and temperature, according to regional structure environment as well as output layer a deposit, this paper has summed up all of those analysis result and suggest that the Pb-Zn-Ag ore deposit that occur in the dolostone, seems to be the Mississippi Valley type (MVT) ore deposits, which locates in Chicheng county liangjia ditch.