中冈底斯扎嘎日金矿床地质特征

Resources Environment & Engineering(2016)

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Abstract
扎嘎日金矿床为中冈底斯岩浆岩带内近期发现的与岩浆热液有关的金矿床.金矿体呈透镜状、脉状产于花岗闪长岩的北西向断裂破碎带中,金铜矿化期产于花岗闪长岩与碳酸盐岩围岩接触带矽卡岩中.矿石类型为石英脉型、蚀变岩型和矽卡岩型,主要矿石矿物为自然金、黄铜矿等,矿床围岩蚀变强烈,以矽卡岩化、绢英岩化、黄铁矿化为主,局部具有磁铁矿化、方铅矿化、孔雀石化.该矿床的发现丰富了冈底斯金矿床的矿床类型,对该地区金矿勘查及研究工作具有重要意义.
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