| 滇黔桂地区微细粒浸染型金矿床的矿床地球化学类型 |
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| 引用本文：.1994.Geochemical types of the micro- and fine-grained disseminated gold deposits in Yunnan-Guizhou-Guangxi region[J].Mineral Deposits,13(4):308~321 |
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| 中文摘要:根据矿床产出的区域构造背景、含矿建造的岩性特点和沉积环境，矿石的矿物共生组合和成矿元素组合以及标型矿物的成分特征等，将滇黔桂地区的微细粒浸染型金矿床划分为三种矿床地球化学类型：金-锑-黄铁矿型矿床、金-汞-(铊)型矿床和金-砷-(锑)型矿床；并分别做了描述。 |
| 中文关键词:滇黔桂地区 微细粒浸染型金矿床 矿床地球化学类型 |
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| Geochemical types of the micro- and fine-grained disseminated gold deposits in Yunnan-Guizhou-Guangxi region |
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| Abstract:On the basis of such factors as the regional tectonic setting of the ore Deposits, the lithology and sedimentary environment of the ore-bearing formations, the mineral assemblages and metallogenie element associations of the ores, the compositional characteristics of the typomorphic minerals, the Iithologic, petrochemical, trace element and rare earth element characteristics of the mineralized host rocks, the composition, degree of mineralization and physical-chemical properties of the fluid inclusions, and the stable isotope composition of sulfur, hydrogen and oxygen, the micro- and fine- grained disseminated gold deposits might be geochemically classified into three types, namely gold-antimony-pyrite type, gold-mercury-(thallium)type and gold-arsenic-(antimony)type. The differences of geological-geochemical characteristics between these three geochemical types of gold deposits reflect their different source beds which were formed in different geological settings and sedimentary environ merits. The source bed of the gold-antimony-pyrite type gold deposits is the volcanogene sedimentary formation produced in the littoral tidal facies at the initial rift-faulting stage of the rift evolution)the source bed of the gold-mercury-(thallium)type deposits is the carbonate-claystone formation formed in the resticted-semirestricted platform neritic facies at the initiaI spreading subsidence stage of the rift evolution, the source bed of the gold-arsenic--(antimony)type gold deposits is the turbidite formation developed along the marginal slope facies of the open-sea basin at the intense subsidence stage of the rift evolution. |
| keywords:Yunnan-Guizhou-Guangxi region, Carlin-type gold deposit, geochemical type of ore deposits |
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