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对贵州遵义黄家湾下寒武统牛蹄塘组镍-钼富集层进行电子探针研究,发现镍主要赋存于黄铁矿、针镍矿、辉砷镍矿、铁辉砷镍矿、紫硫镍矿、赫硫镍矿;钼主要以“碳硫钼矿”的形式存在。镍钼硫化物多与黄铁矿、白铁矿交代共生,反映矿物经历了不同的成矿阶段。岩石中不仅富集Ni、Mo元素,而且Se元素存在超常富集,可以视为热液作用或生物作用的结果。遵义黄家湾下寒武统Ni-Mo富集层应为海底热液沉积和生物沉积混合成因,其物源较为复杂。
Electron microprobe studies of Ni-Mo-rich layers in the Lower Cambrian Niutitang Formation of the Huangjiawan, Zunyi, Guizhou Province reveal that nickel mainly occurs in pyrite, aconite, arsenic-bearing nickel, iron-arsenic- , Purple sulfur nickel ore, heli sulfur nickel ore; molybdenum is mainly in the form of “carbon sulfur molybdenum mine” exists. Nickel molybdenum sulfide and pyrite, white iron ore exchange symbiosis, reflecting the mineral has experienced different stages of mineralization. The rocks are not only enriched in Ni and Mo, but also enriched in Se elements, which can be regarded as the result of hydrothermal or biological action. The Ni-Mo enrichment layer of the Lower Cambrian in the Huangjiawan, Zunyi should be a mixture of hydrothermal sediment and sediment, and its source is more complex.