江西金山金矿床深部原生晕特征与成矿预测

对江西金山金矿床深部扩建工程的0、-80、-10 m三个中段Au等元素原生晕的空间分布特征及组合特征进行研究表明,矿床原生晕组合复杂,各指示元素原生晕吻合性好,As与Au关系密切,是金矿化的最佳指示元素; As、Hg、Sb前缘晕指示元素与Bi、Mo等尾晕指示元素相互叠加,且平均异常强度较高,预测矿体应向深部延伸出现第二个富集带,具有很大的工业远景;到-10m中段Au矿化减弱,Cu矿化增强,燕山早期岩浆热液的叠加改造作用明显,在深部可能出现Cu、Au叠加矿床.

CHARACTERISTICS OF DEEP PRIMARY ANOMALIES AND ORE PROGNOSIS IN THE JINSHAN GOLD DEPOSIT, JIANGXI PROVINCE

Having studied the distribution and association characteristics of primary halos at three levels (0 m, -80 m and -105 m) of the Jinshan gold deposit in Jiangxi, the authors have reached some conclusions. The element associations of primary halos are complex, and the primary halos of different indicator elements coincide well with each other. As is closely related to Au. The anomalies of the front elements Hg, Sb and the rear elements Bi, Mo form superimposed halos and their average anomaly intensities are high. All this suggests that there may exist another enrichment zone in the depth. The Au mineralization becomes weaker at the -105 m level, while things are just the opposite for Cu. This implies that the magmatic hydrothermal activities obviously accumulated ore-forming materials in Early Yanshannian, and were likely to form compound deposits of Cu and Au at the depth.