| 湖南沃溪钨-锑-金矿床的矿石组构学特征及其成因意义 |
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| 引用本文：.2003.Ore Fabric Characteristics of Woxi W-Sb-Au Deposit in Hunan and Their Genetic Significance[J].Mineral Deposits,22(2):107~120 |
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| 基金项目:国家自然科学基金(449602029，49872038)、奥地利国家科学基金(P12026-GEO)、中国科学院百人计划和科技部基础研究重大项目(G1999043210) |
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| 中文摘要:通过对湖南沃溪矿床的宏观至微观尺度上的矿石组构学研究，揭示出矿床系同生热水沉积成因。层状矿体、细脉状矿化以及围岩蚀变之间的空间关系，指示了矿石与其所赋存的围岩同时形成。矿床形成后的变质_变形作用，主要使矿物发生重结晶、碎裂、位错以及小范围的再活化等。 |
| 中文关键词:地质学 矿石组构 沉积喷流 同生成因 钨锑金矿床 沃溪 湖南 |
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| Ore Fabric Characteristics of Woxi W-Sb-Au Deposit in Hunan and Their Genetic Significance |
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| Abstract:Ore fabric studies of the Woxi W-Sb-Au deposit on macro-to micro-scales have revealed that the deposit is of syngenetic hydrothermal sedimentary origin. Ore fabric evidence for a syngenetic origin mainly includes: (1) rhythmical, fine layering/banding of sulfides, scheelite, quartz, and pelagic metasediments, (2) folding of both ore layers and their host rocks, (3) soft-sediment deformation due to slumping and synsedimentay sliding, (4) colloform textures of fine-grained pyrite, and (5) abundant si fabrics in minerals of pyrite, stibnite and schee-lite. The intimate spatial relationships between the stratiform ores, the stringer veins, and the alteration blankets suggest coeval deposition of the ores and their host metasediments. Postdepositional metamorphism and tectonic deformation chiefly resulted in recrystallization, cataclasm, dislocation, and small-scale remobilization of minerals. |
| keywords:geology, ore fabrics, sedimentary exhalation, syngenetic origin, W-Sb-Au deposit, Woxi, Hunan Province |
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