摘要
新元古界栾川群煤窑沟组地层为变质细砂岩、片岩、大理岩互层,上部以含叠层石白云质大理岩为主夹片岩、炭质板岩和石煤,中部主要为白云石大理岩,下部石英岩夹千枚岩。形成于浅海陆架-局限台地潮下-潮上沉积环境。炭质板岩和石煤是区域上铅锌银矿的标志层,与钒矿关系密切,是重要的找矿标志。炭质板岩走向约110°,与地层基本一致,由于构造发育而呈现形态各异,厚度大于100m。通过地球化学数据分析,认为高品位钒矿主要存在于煤窑沟组炭质板岩中,V与Cr、Mo存在相关关系,成矿物质来源于大陆上地壳或上地壳-中地壳。
Meiyaogou formation in western Henan province is a part of Luanchuan group ,which is belongs to Neoproterozoic. The main type of lithology is the interaction of deterioration fine sandstone, schist and marble, the major components of the upper lithology are the dolomitic marble containing stromatolite, the other components are schist, carbonaceous schist and stone coal, the middle part is dolomite marble, the bottom are quartzite and phyllite. Formed in shallow water shelf-subtidal restricted platform-supratidal depositional environment, Carbonaceous slate and stone coal layer are the symbol of zinc and silver in the area, meanwhile, it is the important vanadium ore prospecting marks. The regional trend is nearly 110~ ,and the carbonaceous slate consistent. Thickness varies due to the complicated geological structure, thickness can be up to 100 meters. The conclusion according to the analysis of geochemical date： The Vanadium of high grade mainly exist in the carbonaceous slate of Meiyaogou formation, and the vanadium is closely concern with chromium and molybdemun. The ore materials mainly come from continent uDDer crust or middle-unner continent crust.
出处
《四川有色金属》
2013年第1期42-46,共5页
Sichuan Nonferrous Metals
关键词
豫西
煤窑沟组
钒矿
地球化学特征
Western Henan Province
Meiyaogou formation
Vanadium deposit
Geochemistry Characteristics
