河南省小秦岭至熊耳山地区金矿床类型及关系

On types for gold deposits in Xiaoqinling-Xiong'er Mountain region in Henan and their relationship

根据矿床成因、控矿构造、矿石成分及结构构造,划分了河南省西部小秦岭至熊耳山地区的金矿床类型,并对各种类型金矿床之间的关系进行了探讨,结果表明:该地区金矿床类型主要有爆破角砾岩型、接触变质带型、石英脉型、破碎带蚀变岩型和砂金型;斑岩型、矽卡岩型和韧性剪切带型金矿床具有较好的找矿前景;金矿床的形成和太华群古老结晶基底变质岩关系密切;金矿床和燕山期花岗岩具有密切的空间关系。

According to the reasons for the deposits,the ore-controlling structure,the ore composition,and the strucural composition,the paper classifies the gold deposits in Xiaoqinling-Xiong＇er Mountain region of Henan,explores the relationship among all kinds of gold deposits,and proves there are mainly the explosion breccia type,the aureole type,the quartz vein type,the altered rock at the fracture zone,and the placer type,and indicates the gold deposits of the porphyry type,the skarn type and the ductile shear zone have better prespective potential for the exploration,explains the close space relationship between the formation of the gold deposit and the metamorphic rock at the ancient crystallization basement of Taihua Group,as well as the close relationship between the gold deposit and the Yanshanian granite.