东秦岭扬砦金矿区微量元素特征及找矿意义

PECULIARITIES AND EXPLORATORY SIGNIFICANCE OFTRACE ELEMENTS IN YANGZHAI GOLD DEPOSITS,EAST-QINLING MOUNTAIN

本文采用基础地质同统计数学相结合的方法,通过对扬砦金矿区微量元素在各岩类中的分布特征及空间上分布规律的研究,探讨成矿过程中金及伴生元素的迁移富集之规律,同时研究微量元素的指示性特征,并依此指示成矿有利地段和找矿靶区。

Through geological and statistical studies of the distribution of trace elements in different rocks and the spatial position of Yangzhai Gold Deposits, this paper presents an argumentation on the migration and enrichment of gold in mineralization process and on trace elements as indicators of gold ore deposits.It is shown that the 16 trace elements, here, based on their statistics, may be divided into 3 groups: ( 1 )inert element group (V, Ti, Or, Co, Ni); ( 2 ) rather mobile element group (Mn, P, B, Ba, Zn, Ga) and (3) mobile element group (Au, Pb, Cu,Mo, As). They can indicate respectively the characteristics of original rock composition, migmatite and mineralization.By trend surface analyses of moblie elements locations of favourable mineralizations have been pointed out.