构造原生晕法在地质找矿上的应用

Application of structural primary halo method in geological prospecting

在桦甸市三道沟金矿床300m中段两个受构造控制的、原岩为花岗闪长岩的蚀变带上取原生晕,经过与未蚀变的花岗闪长岩、金矿石及辉绿岩之间微量元素的对比分析,判断出该蚀变带为矿化蚀变带,进而在其延长方向上找到了矿体;在白山市石人金矿床控矿构造北东延长方向上,沿断裂构造走向采取原生晕,在Au、Hg元素较高的样品地段,揭露到了矿体。在尚没有完全掌握矿床原生晕分带性的勘查初期阶段,利用构造原生晕找矿是一种简捷经济的方法,但需要结合其它控矿条件,综合考虑其成晕原因,以达到最佳找矿效果。

To sample in the primary halo in the alteration which is controlled by two structures,granodiorite in 300m of middle part of Sandaogou gold deposit,through the contrastive analysis of microelement of unaltered granodiorite,gold ore and diabase.It is determined that alteration belt should be mineralized alteration belt,the ore body was discovered along the alteration belt;sampled in primary halo along the faulted structure,NE ore-controlling structure of Shiren gold deposit,in high Au,Hg element area,the ore body was discovered.At the beginning of the exploration that partial understand primary halo zoning of ore deposit.This is a simple,economical prospecting method using structural primary halo one.Meanwhile,we need to synthesize other ore-controlling conditions to achieve the best prospecting effect.