商南县三官庙金矿地质特征及控矿条件浅析

GEOLOGY AND ORE-CONTROLLING CONDITIONS OF GOLD DEPOSITS IN SANGUANMIAO OF SHANGNAN COUNTY

三官庙金矿位于秦岭海西—印支期褶皱带东段,区内褶皱、断裂构造发育,岩浆活动强烈。耀岭河组灰—灰黑色含炭绢云千枚岩及其层间断裂间的次一级断裂是寻找金矿体的间接标志,硅化、黄铁矿化、钠长石化是寻找金矿的直接标志。

The Sanguanmiao area lies in the eastern part of the Hercynian-Indosinian fold belt of Qinling Mountains,where folds and fractured structures are well developed with intensive magmatic activities.The indirect indicators for gold prospecting in this area focus on the ash-black carbonaceous sericite phyllite of the Yaolinghe Formation and the secondary interlaminar fractures,and the direct marks are of silicification,pyritization and albitization.