| 新疆康古尔糜棱岩岩带蚀变岩型金矿床地质特征及成因 |
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| 引用本文：.1994.Geological characteristics and genesis of the altered rock type gold deposit in Kanggul Mylonite Zone，Xinjiang[J].Mineral Deposits,13(2):97~105 |
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| 中文摘要:康古尔金矿床赋存于晚古生代中一中酸性火山岩系中，受韧性剪切带控制，不同于国内外典型火山岩型金矿床，是一个矿床成因比较独特的金矿床。 |
| 中文关键词:金矿床 火山岩 糜棱岩带 蚀变岩型 新疆康古尔 |
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| Geological characteristics and genesis of the altered rock type gold deposit in Kanggul Mylonite Zone，Xinjiang |
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| Abstract:The Kanggul gold deposit has rather unique metallogenic characteristics. It occurs in a second-order shear zone within a large-size ductile shear zone on the northern margin of the Carboniferous island arc volcanic area. Orebodies, hosted by altered phyllonite and mylonitized volcanic rocks, are parallel to the steep-dipping mylonite zone, and the wall rock alterations include silicification, sericitization, chloritizafion and pyritization. Geological-geochemical studies show that the ore deposit is a product of polyphase and polystage evolution, with the ore materials derived from tile depth of the crust or from andesitic volcanic rocks. During ductile deformation and metamorphism after Middle Carboniferous, metamorphic hydrothermal activities led to the mobilization of gold and initial crystallization of auriferous pyrite. At the late Variscan period, the uplifting of the crust caused ductile-brittle deformation of the shear zone and the simultaneous emplacement of granitic magma, under the action of “mixed” hydrothermal solutions consisting of metamorphic water, meteoric water and magmatic water, gold was concentrated in the shear zone, forming the gold deposit. |
| keywords:gold deposit, volcanic rock, mylonite zone, altered rock type, Kanggul of Xinjiang |
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