北票二道沟金矿综合信息找矿模型

在花岗闪长岩体、构造、次生晕组合异常、物探异常与金矿脉的关系及金矿脉原生晕分带序列等综合控矿信息的分析和统计的基础上,作者总结出岩体倾伏端为二道沟金矿聚集的良好空间场所。在倾伏端范围内的马蹄形环状矿化带中,导矿和容矿断裂锐角交汇区或两组容矿裂隙的锐角复合交汇区为金矿的富集地段。金矿脉原生晕明显表现出Sb、Ag、Bi、Hg头晕组合及Cu、Co、Ni尾晕组合特征。Au、Ag、sb、Pb、Hg5种元素次生晕组合异常与低阻、低磁、高极化或低阻、高磁、高极化物探组合异常吻合。上述影响金矿富集的综合控矿信息的有机组合,构成了二道沟金矿综合信息找矿模型的全部内容。

THE MODEL OF LOOKING FOR DEPOSITS WITH COMPREHENSIVE INFORMATION FORMED IN ERDAOGOU GOLD ORE OF BEIPIAO AREA

It is concluded by the author that the plunging crown of rock body is the favourable site for accumulating Erdaogou gold ore on the basis of the analysis and statistics on the comprehensive information such as the relationship of the gold ore vein to the granodiorite body, structure, element association anomaly of secondary halo, physical prospecting anomaly, and the zonatity sequence of primary halo in gold ore. In the horse-shoe circular mi-neralized zone within the plunging crown,the gold ore is rich in the acute angle intersect area of faults as passageways for ore fluids and faults for ore housing, or the composite acute angle intersect area of the faults for ore housing in the two directions. The primary halo in gold ore vein obviously shows the presense of s~u- praore halo association of Sb, Ag, Bi, Hg,and subore halo of association of Cu, Co, Ni. The secondary halo association anomaly of Au, Ag, Sb, Pb, Hg coin- cides with the physical prospecting asso-ciation anomaly of low resistance, low magnetization and high polarization, or low resistance, high magnetization and high polarization.The comprehensive ore-control infor-marion influencing the accumulation of gold ore mentioned above is the whole content of the model of looking for deposits formed with comprehensive information in Er-daogou gold ore.