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矿床地质  2003 

四川夏塞银多金属矿床地质特征及成因

Keywords: 地质学,夏塞银铅锌矿,地质特征,矿床成因,四川

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Abstract:

文章对夏塞银多金属矿床形成的地质背景、矿床地质特征和成矿机制进行了研究。研究结果表明,矿床位于义敦岛弧带昌多阔—格聂花岗岩带中段的绒依措岩体北侧,矿体产出部位严格受断裂破碎带的控制,矿体主要为似层状(大脉状)、脉状、透镜状。容矿岩石主要为绢云母板岩、长石石英砂岩。矿石类型简单,主要为银铅矿石、银铅锌矿石、银多金属矿石及银锌矿石。矿化富集与燕山晚期绒依措花岗岩密切相关。硫、铅同位素及流体包裹体研究表明成矿流体是岩浆水与大气水混合形成的中低温热液。矿床属受断裂破碎带控制的充填-交代型矿床。

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