| 云南墨江金矿床的同位素地球化学及成因探讨 |
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| 引用本文： | 李元,金世昌,俞广钧. 云南墨江金矿床的同位素地球化学及成因探讨[J]. 地球与环境, 1998, 0(4) |
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| 作者姓名： | 李元 金世昌 俞广钧 |
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| 作者单位： | 昆明理工大学国土系!昆明，650093 |
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| 摘 要： | 墨江金矿的同位土地球化学特征、成矿元素组合和包裹体成分表明：成矿物质主要未源于金厂蚀变起基性岩体，成矿热液是深源流体、岩浆水和大气降水混合的产物。成矿期深部富矿化剂流体沿断裂上升并与地下水混合，从侵入体及围岩中淋滤出了成矿物质。在迁移过程中，随着地球化学条件的改变，金在有利部位沉淀富集形成矿床。墨江金矿床底混合热液改造型矿床。
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| 关 键 词： | 同位素 物质来源 成矿流体 成因模式 云南 |
ISOTOPE GEOCHEMISTRY AND GENESIS OF MOJIANG GOLD DEPOSIT, YUNNAN |
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| Li Yuan, Jin Shichang, Yu Guangjun. ISOTOPE GEOCHEMISTRY AND GENESIS OF MOJIANG GOLD DEPOSIT, YUNNAN[J]. Earth and Environment, 1998, 0(4) |
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| Authors: | Li Yuan Jin Shichang Yu Guangjun |
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| Abstract: | The isotope geochemical characteristics, ore-forming elements association and the composition of fluid inclusions of the Mojiang gold deposit show that the metallogenic material mainly comes from altered ultrabasic rocks, and the ore-forming solution is derived from fluids at depth and magmatic water mixed with meteoric water. The ore-forming process could be described as follows: in the mineralization process gold was leached from the intrusive body and its surrounding rocks by circulating water mixed with mineralizer-rich fluids along the fault at depth, and then the gold in the fluids was precipitated in favorable locations with changing geochemical condition. It is a deposit of the mixed hydrothermal-reworked type. |
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| Keywords: | isotope geochemistry material source ore fluid metallogenic model Yunnan |
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