| 陈明辉.湖南渔塘铅锌矿集中区地质特征及成矿问题讨论[J].地质与勘探,2011,47(2):251-260 |
| 湖南渔塘铅锌矿集中区地质特征及成矿问题讨论 |
| Geological Features and Metallogenesis of the Yutang Pb-Zn Ore Concentration Belt in Hunan Province |
| 投稿时间：2010-01-30 修订日期：2010-08-24 |
| DOI： |
| 中文关键词: 沉积相 铅锌矿 矿床特征 成因 渔塘 湖南 |
| 英文关键词: sedimentary facies, Pb-Zn deposit, deposit feature, genesis, Yutang, Hunan Province |
| 基金项目: |
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| 摘要点击次数: 2800 |
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| 中文摘要: |
| [摘要]渔塘铅锌矿集中区为湘西北最具找矿潜力的铅锌成矿区,赋存于寒武系下统清虚洞组厚大
的碳酸盐岩中。矿化带延伸与藻礁浅滩相带一致。矿体具多层性,呈缓倾斜的整合层带状产出。矿石以
锌为主,铅锌共生,具有一定分带现象。矿石为微晶状、细晶状及胶状等结构。成矿物质主要来源于藻类
及碳酸盐泥对Pb2+、Zn2+离子的吸取。稳定同位素资料表明,本区铅主要为上地壳铅,硫源主要来自碳酸
盐岩系的硫酸盐。矿床成因属于沉积成岩矿床类型,兼有成岩后期矿床性质。找矿应主要沿藻礁浅滩相
拓展深部第二空间的潜力和矿带东延地带进行,结合构造-地球化学分析,以探查隐伏矿床为主。 |
| 英文摘要: |
| Abstract:The Yutang Pb-Zn deposit shows great potential for ore exploration in western Hunan Province. It occurred in the carbonate rock of Qingx鄄
udang Formation of Lower Cambrian, where the extending mineralized belt coincides with the algae reef bank facies zone. The ore bodies are of multi-lay鄄
ers with gentle dipping and conformable beds. They are dominated by Zn and coexisting Pb-Zn, showing zonation to some extent, and microcrystal, fine鄄
crystal and gel textures. The ore-forming materials came from Pb2+ and Zn2+ ions absorbed by algae and carbonated mud. Stable isotope data indicate that
the lead (Pb) of this area is mainly from the upper crust. The sulfur (S) mainly originates from the sulphate of the carbonate rock series. Therefore the
deposit genesis is sedimentation-diagenesis type with the nature of post-diagenesis. The further prospecting should be focused along the eastward exten鄄
ding part of the algae reef bank facies belt. And concealed deposits will be the primary target for exploration based on combination of structural and geo鄄
chemical analyses. |
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