碳酸盐化是黄铁细晶岩化作用的阶段之一。铁白云石是近矿交代作用的特征矿物。据现有的资料(1966),属于[CaMg(CO_3)_2-CaFe(CO_3)_2]系列的所有矿物统称为铁白云石。在这些矿物中,Fe∶Mg≥1。含量为 Fe∶Mg=1∶2的矿物称为亚铁白云石。对该系矿物进行差热分析是最好的鉴定方法。除了为白云石所特有的两个很大的吸热谷外,铁白云石的差热曲线还 Carbonatation is one of the stages of pyroxenization of pyrite. Iron dolomite is a mineral that is proximate to mineralization. According to the available data (1966), all minerals belonging to the [CaMg (CO_3) _2-CaFe (CO_3) _2] series are collectively referred to as iron dolomite. Among these minerals, Fe: Mg≥1. Minerals with a content of Fe: Mg = 1: 2 are called ferrous dolomites. Differential thermal analysis of the Department of minerals is the best method of identification. In addition to the two large endothermic troughs unique to dolomite, the differential thermal curve of the iron dolomite