内蒙古巴林左旗哈达音阿日银多金属矿床地质特征及成矿规律

Geological characteristics and mineralization regularity of Hadayinari Ag polymetallic ore deposit in Balinzuoqi, Inner Mongolia

哈达音阿日银多金属矿床是近年来在大兴安岭中南段多金属成矿区内发现的又一重要矿床,对其研究具有重要的理论和实践价值。本文通过对矿区地层、构造、侵入岩、地球化学特征以及矿床地质特征的初步研究,认为矿床形成的主成矿期次可以划分两期,其矿化类型既有早期火山—沉积成因的层状、似层状矿化,也有晚期热液成因的脉状矿化,且后者形成了哈达音阿日矿床的大部分矿体。矿床的主要控矿因素为地层、构造和岩浆岩,并总结出了区内的成矿规律。

Hadayinari Ag polymetallic deposit is an another important deposit and newly discovered in the middle and southern segments of the Da Hinggan Mountains metallogenic area, so the study of it has great theoretical and practical values. Based on a detailed study of strata, tectonic, intrusive rocks, geochemical features in the mining area and deposit geological characteristics, this article shows that the formation of deposit is divided into two main mineralization stages.The mineralized types have early stratified or stratoid beds mineralization from volcano sedimentation metallogensis and later vein mineralization from hydrothermal metallogensis which form the most of ore body in Hadayinari. The main ore-controlling factors have strata, tectonic and magmatic rock. So mineralization regularity of Hadayinari are summarized.