摘要
从剪切带及原岩建造分析入手，论述了工作区内金矿的分布特征和主要控矿因素。区内的金矿床（点）无论其物质来源和时代如何，就其空间位置而言绝大多数金矿直接产在剪切变形变质带─—脆性及脆－韧性剪切带中。Ｆｅ／（Ｆｅ＋Ｍｇ）高比值的容矿岩石有利于金的沉淀富集。
Based on the study of shear zone and protolith formation,this paper discussed the distri-bution feature and major ore-control factors of gold deposits in north Xixia County,HenanProvince. Almost all gold deposits or occurrences of this area occurred in shear deformation-metamorphism zone,that is brittle or brittle-ductile shear zone,no matter what the sourceof gold and the mineralization epoch is. The host rock of higher Fe/(Fe + Mg)ratio isfavourable to deposit of gold.
出处
《河南地质》
1994年第4期255-262,共8页
Henan Geology
基金
秦巴重点片地质找矿科技攻关项目
关键词
秦岭
造山带
剪切带
金矿床
分布特征
Qinling orogenic belt,gold deposit,shear zone,fluid,Xixia
