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沉积岩、风化壳和氧化带中FeO与Fe_2O_3的含量反映沉积和风化的地球化学环境,代表着氧化还原电位的高低,这直接影响着元素组合和不同价元素分布部位以至矿物的分带.因此对于与沉积岩、风化壳和氧化带有关矿产的找矿评价具有指导作用. 火成岩中FeO高,意味着岩浆在结晶过程中铁主要参与含铁的硅酸盐矿物,不利于形成磁铁矿,对于评价矽卡岩铁矿或含高价铁的金属矿床也是很重要的.根据硅酸盐全分析数据,按理论公式推算矿物组合时,同样要求有准确的FeO和Fe_2O_3的分析结果,否则就会造成推算上的
The contents of FeO and Fe_2O_3 in sedimentary rocks, weathering crusts and oxidation zones reflect the geochemical environment of sedimentation and weathering, and represent the redox potential, which directly affects the elemental composition and the distribution of elements with different valences and mineral zoning. And sedimentary rocks, weathering crust and oxidation zone ore-related mineralogical evaluation of the evaluation of guidance.Fe igneous FeO, means that the magma in the crystallization process of iron is mainly involved in iron-containing silicate minerals, is not conducive to the formation of magnetite, for the evaluation of silicon It is also important that kaolinite or metallogenic deposits contain high-valent iron.According to the full analysis data of silicate, when the mineral assemblage is calculated according to the theoretical formula, accurate analysis results of FeO and Fe 2 O 3 are also required, otherwise, of