黑龙江大兴安岭地区塔源二支线Pb-Zn-Cu-Mo多金属矿床地质特征及成矿模式分析

Analysis on Geologic Feature and Mineralization Model of Pb-Zn-Cu-Mo Polymetallic Deposit in Tayuan Second Branch Line of Greater Khingan,Heilongjiang

塔源二支线Pb-Zn-Cu-Mo多金属矿床位于额尔古纳地块和北兴安地块之间的大兴安岭早中华力西造山带北段。矿床主要赋存于石炭系新伊根河组地层中,矿体在纵向、横向上呈陡倾、网脉状产出,具有近地表厚,深部变薄特点。本文通过详细研究了该矿区矿体地质特征、矿石成分及结构构造、围岩蚀变特征,总结建立了该矿床的成矿模式。

The Pb-Zn-Cu-Mo polymetallic deposit of Tayuan second branch line located in the north section of the early and middle-term variscan orogenic belt between Erguna block and North Khingan block. The deposit mainly occurs in the carboniferous new Yigen river formation stratum,the orebody appears steeply inclined,mesh-vein structure in longitudinal and lateral direction,which has the following features,the thickness of deposit is thick near the earth surface,and thin in the deep section. The mineralization model of this deposit is summarized based on the detailed investigation of the geologic feature,ore composition and structure construction,alteration characteristics of surrounding rock.