摘要
湘西北地区镍钼钒多金属矿床赋矿层位为下寒武统木昌组.可划分为两种岩性组合序列,分别赋存镍钼矿床和钒矿床,并伴生金银矿化,还蕴藏着极其丰富的石煤资源,是湘西北有色及贵金属潜在的成矿区域.属沉积型矿床,而成岩化作用使其成矿物质进一步富集.
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.
出处
《地质找矿论丛》
CAS
CSCD
1990年第3期49-62,共14页
Contributions to Geology and Mineral Resources Research
