内蒙古孟恩陶勒盖银铅锌铟矿床成因研究
Genesis of Meng'entaolegai Ag-Pb-Zn-In Polymetallic Deposit in Inner Mongolia
查看参考文献20篇
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文摘
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文章从地质特征及地球化学特征方面论证了孟恩陶勒盖矿床的成因.地质特征显示该矿床的形成与花岗岩之间不存在成因联系,矿床相对于岩浆岩围岩是后成的,花岗岩及断裂构造只是为矿床提供了储存空间.矿床地球化学特征显示该矿床的成因与可能位于深部的燕山期岩浆活动有关,成矿元素及硫主要来自岩浆,成矿流体以岩浆水为主.因此该矿床属于岩浆热液型多金属矿床. |
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其他语种文摘
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The Meng' entaolegai polymetallic deposit located in the center of a granitic batholith is controlled by EW-trending faults. The major useful elements of the deposit are silver, lead and zinc, with rich indium, tin and cadmium. Its geological characteristics show that there exists no genetic correlation between the deposit and the granites. The deposit was formed later than the granites. The granites and faults provided only room for the ore-bodies. The ^ S values are - 1.7%o to +4.6%o, indicating that sulfur was derived from the magmatism. The ore-forming fluid must have come from the magmatic differentiation in the light of the H-0 isotopic composi-tions. The lead isotopic compositions of all related rocks and ores indicate that lead in ores has no relationship with the Hercynian granite, the Yanshanian granite and the Precambrian basement metamorphic rocks, and it has the same source as sulfur. Although the geological features of the deposit are somewhat similar to those of the orogen-type deposits, its geochemical features imply that its origin is related to other deep-seated magma-tism. During the mineralization, the Huolinhe regional fault acted as the channel for the migration of ore-form-ing fluids from the depth, and the EW-trending faults served as room for the settling of orebodies. |
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来源
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矿床地质
,2004,23(1):52-60 【核心库】
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关键词
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地质学 地质特征
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地球化学特征
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矿床成因
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富铟多金属矿床
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孟恩陶勒盖
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内蒙古
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地址
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中科院贵阳地球化学所, 矿床地球化学重点实验室, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0258-7106 |
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学科
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地质学 |
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基金
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国家自然科学基金项目
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文献收藏号
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CSCD:1497583
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