摘要
大庙金矿位于北山南带西段,塔里木板块东段,为塔里木地台与北山古生代褶皱带的衔接部位。金矿体的形成受白墩子-石板墩韧性剪切带西部的平梁东韧性剪切带控制,主要产于前长城系敦煌岩群黑色二云母石英片岩和早三叠世闪长岩中,碎裂闪长岩及花岗闪长岩脉是重要的找矿标志,褐铁矿化、硅化、高岭土化是找金的直接标志。
Damiao gold deposit is located in the western section of Beishan Southern belt and the eastern section of Tarim plate,which is the junction of Tarim platform and Beishan Paleozoic fold belt.The formation of the gold orebody is controlled by the east Pingliang ductile shear zone in the west of Baidunzi-Shibandun block ductile shear zone,which mainly occurs in the black two-mica quartz schist and early Triassic diorite in the Dunhuang rock group of the pre-Changcheng System,cataclastic diorite and granite diorite vein are the important prospecting marks,limonite,silicide,kaolin was looking for gold mark directly.
作者
洪栋栋
张志旺
HONG Dong-dong;ZHANG Zhi-wang(Gansu Zhiguang Engineering Surver and Design Co.Ltd.,Lanzhou 730000,China;Geological Exploration in the Chinese Building Materials Center Team in Gansu Province,Tianshui 741000,China)
出处
《甘肃冶金》
2022年第6期94-99,共6页
Gansu Metallurgy
关键词
金矿
地质特征
找矿标志
大庙
gold
geological characteristics
prospecting mark
Damiao
