四川东北寨金矿床成矿地球化学背景研究

STUDY ON THE GEOCHEMICAL BACKGROUND DURING FORMING DEPOSIT OF DONGBEIZHAI GOLD DEPOSIT IN SICHUAN PROVINCE

通过对东北寨微细浸染型金矿床赋矿地层新都桥组黑色岩系含金特点和原生地球化学特征的研究，认为黑色岩系为矿源层，提供了主要的成矿物质。指示元素组合和元素以及累乘元素比值的分带模式对在松潘地区黑色岩系中金矿勘查、异常评价以及深部预测等有一定的指示意义。

The research on the gold characteristic in 'black sedimentary system' (Xingduqiao set) of Dongbeizhai micro fine disseminated gold deposit shows that black sedimentary system is the source bed furnishing mainly the material for the ore forming deposit. The composition of trace elements and the belt of geochemical model have some indication meaning in exploring the same deposit type and researching gold anomaly in black sedimentary system in Songpan region.