徽县银洞子金矿床地质特征与控矿因素分析  

GEOLOGY AND ORE-CONTROL FACTORS OF YINDONGZI GOLD DEPOSIT IN HUIXIAN, GANSU

作　　者：石素娟[1] 

机构地区：[1]甘肃省核地质二一三大队,甘肃兰州741020

出　　处：《甘肃地质》2014年第3期56-60,共5页Gansu Geology

摘　　要：银洞子金矿床位于甘肃徽县东南部,属多因素沉积再造型矿床。矿床受EW向F1断裂及次级构造控制,金矿化与下石炭统下岩组凝灰岩、凝灰质灰岩、不纯的薄层灰岩及其构造角砾岩有关,在金矿化区常见中基性—中酸性小岩体(枝)分布。金矿化赋存在通过此岩组断裂中。与金矿化关系密切的围岩蚀变主要是硅化、黄铁矿化、褐铁矿化、碳酸盐化等。Yindongzi gold deposit is situated southeast area of Huixian County, Gansu Province. It is a sedimentary-regenerate deposit affected by multi-factors, structurally controlled by EW F1 fault and secondary structures. Gold mineralization was related to Lower Carboniferous lower rock formation containing tuff, tufaceous limestone, impure thin bedded limestone and tectonic breccia, and most of them were found among intermediatebasic, intermediate-acid rock mass（apophysis）. The wall rock alteration related to gold mineralization are silicification, pyritization, ferritization, and carbonatation.

关 键 词：地质特征 矿化成因 火山凝灰岩 凝灰质灰岩构造角砾岩 银洞子 

分 类 号：P618.51[天文地球—矿床学]