| 熊耳群富碲（化物）型金矿床硫同位素组成及成矿作用探讨 |
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| 引用本文：丁士应,任富根,李增慧,赵加农.1996.熊耳群富碲（化物）型金矿床硫同位素组成及成矿作用探讨[J].地球学报,17(z1):91-96. |
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| 基金项目:地质行业基金与国家自然科学基金联合资助项目（49372131） |
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| 中文摘要:熊耳群火山岩中产出各种类型的金矿床，富碲（化物）型（俗称构造蚀变岩型）是其主要类型，该类型金矿出现大量碲化物或富碲、硒。硫化物δ34S以较大负值为特征，δ34S=-19.24‰-+6.68‰。本文通过综合研究及与国内外有关矿床对比，提出该碲化物型金矿床δ34S负值的主要原因，是地表水渗透参与导致成矿热液物理化条件改变，氧逸度（fo2）升高、pH值降低，从而引起硫同位素强烈分馏形成的，δ34SΣS≈0‰显示成矿物质来源于熊耳群富钾火山岩系。该类型金矿床成矿作用为上升的岩浆地热流与下渗的地表水共同作用形成的浅成低温热液系统成矿，其成因类型属浅成低湿热液富碲（化物）型金矿床。 |
| 中文关键词:富碲（化物）金矿 硫同位素 成矿作用 熊耳群 |
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| Sulfur Isotope Composition of Telluride-Type Gold Deposit and Discussion on the Mineralization |
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| Abstract:Telluride-type gold deposit is the main type of ones which occur in volcanic rocks Xionger Group, and is roch in tellurium and selenium, withδ34S=-19.24‰-+6.69, S-isotope of sulfide is characteristic of large niegative values, that is the product of intensive fractionation of S-isotope resulted from change of physicochemical condition of ore-forming hydrothermal fluid setted off by mixing of permeated cold group water. δ34SΣS≈0‰, it reflect ore-forming metals came from K-rich volcanic rock series of Xionger Group. The genetic type of the deposit belongs to volcanic epithermal telluride-rich type gold deposit. |
| keywords:telluride gold deposit sulfur isotope mineralization Xionger Group |
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