| 湘西北地区镍钼钒多金属矿床及金银矿化的地质特征与成矿条件 |
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| 引用本文： | 鲍振襄.湘西北地区镍钼钒多金属矿床及金银矿化的地质特征与成矿条件[J].地质找矿论丛,1990,5(3):49-62. |
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| 作者姓名： | 鲍振襄 |
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| 作者单位： | 中国有色金属工业总公司长沙地勘局245队 |
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| 摘 要： |
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| 关 键 词： | 镍钼钡矿床 金银矿化 成矿条件 |
GEOLOGICAL FEATURES AND METALLOGENIC CONDITION (INCLUDING Au, Ag MINERALIZATION) OF Ni-Mo-V ORE DEPOSITS IN THE NORTHHWEST HUNAN PROVINCE |
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| Institution: | 215 team, Changsha prospecting bureau, China Nonferro-metal industrial Co. |
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| Abstract: | Ni-Mo-V ore deposits are distributed along the southeast side of Xiang (Hunan)-Qian (Guizhou)-Chuna (Sichuan)-E (Hubei) palaeo-depression of Yangtze peneplatform as a metallogenic belt (180Km long) in the northwest Hunan Province. This area is a potential target for Ni-Mo (including Au and Ag) polymetal deposits as well as the main productive area of V-ore in China and it is also abundant with stone coal.Poly-metal ore deposits mainly occur in the blackshale at bottom of Muchang Formation. The ore-bearing shale is riched in carbon and pyrite and fossils of alga and micro palaeoplant can be seen. There are two kinds of rock associations in which poly-metal ore deposits are discovered i.e. Ni-Mo ore deposits in C-and-P-bearing rocks and dolomitic rocks; V-ore deposits in carboniferous rocks, argillite and silicious rocks. These two rock associations are the different sedimentary facies of the same synsedimentary metallogenic period of the early Cambrian. Au, Ag mineralizations are spatialy and temporaly related to the poly-metal deposits. Biogenic activity played an important role in concentration of ore materials during diagenesis under shallow-semishallow sea water and relatively quiet sedimentary environment and humid climate. |
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