李梅锌矿床地质特征及其成因 |
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引用本文: | 夏新阶 舒见闻. 李梅锌矿床地质特征及其成因[J]. 大地构造与成矿学, 1995, 19(3): 197-204 |
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作者姓名: | 夏新阶 舒见闻 |
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摘 要: | 李梅锌矿床是渔塘超大型铅锌矿床的重要组成部分,是近年运用地洼学说预测,经初步验证查明的大型矿床。主要组分锌>5%,铅很低。矿体主要赋存于下寒武统清虚洞组台地边缘藻礁灰岩相中,为同生构造组合、穹窿、北北东和北西西向地洼构造所控。属多因复成矿床,地台阶段主要是矿源层经压溶作用形成构造压溶热液成矿,在地洼阶段可能是渗流热液成矿,铅锌等成矿物质来自寒武纪碳酸盐围岩,主要成于低温。
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关 键 词: | 李梅大型多因复成锌矿床,地洼学说,预测 |
GEOLOGIC CHARACTERISTICS AND ORIGIN OF THE LIMEI ZINC SULFIDE DEPOSIT |
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Abstract: | The economically important Limei zine sulfide deposit of the Yutang massive lead and zine solfide deposit was predicted by the Diwa theory several years ago.The deposit is a polygenetic compound zine sulfide with the Zn content high(exceeding 5%) while the Pb content is very low.The main orebodies which occur in a platform margin algal reeflimestone of Qingxudong Formation(∈1q) are structurally controlled by the dome and diwa structures(NNE-and WNW-trending).During the platform stage,structural pressure solution mineralization occurred owing to the pressure-melting effect of the ore source bed and during the Diwa stage mineralization was vadose hydrothermal mineralization.Ore-forming metals(Zn,Pb) were derived primarily from the carbonate wall rocks. |
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Keywords: | Limei large polygenetic compound zine deposits Diwa theory prediction |
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