青海双朋西金矿区原生晕特征及其指示意义

Characteristics and Indication Significance of the Primary Halo in Shuangpengxi Gold Deposit in Qinghai

双朋西金矿区金的成矿条件优越,阐述了双朋西金矿的区域地质和区域地球化学概况,并分析了该区的成矿地质条件。采用1∶2.5万原生晕普查方法,获得了Au,Cu,Ag,Pb,Zn等元素综合异常。原生晕异常反映了金矿化的存在,而Au,Sn,Pb,Zn,Cu是重要的指示元素。异常与断裂构造控制的矿化形态及产状关系密切,进一步说明该区金矿是以断裂控矿为主。

The geologic conditions are favorable for gold mineralization in Shuangpengxi gold deposit. Its regional geology and geochemistry are presented and ore-forming conditions are analyzed. Comprehensive anomalies of elements such as Au, Cu, Ag, Pb and Zn are found in a 1/25,000 primary halo reconnaissance. Primary halo abnormities reflect the existence of gold mineralization and Au, Sn, Cu, Pb and Zn are the most important indicator elements. Abnormities are closely related with the mineralization forms and occurrences controlled by faulted structures, further indicating that the gold ore in this area is mainly controlled by faulted structures.