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染色反应常用于研究碳酸盐类岩石的矿物组成,采取的方法和染色剂也有种种不同,但多数只能鉴别一种矿物,或是若干矿物只能染上一种颜色.也有人(Mann, Warne等)以试镁灵(对硝基苯-4-偶氮苯二酚-NO_2C_3H_4N:NC_6H_3[OH]_2)作为染色剂使样品中的碳酸盐矿物着色.这个方法的缺点也是只能使菱镁矿这一种矿物着色,而且颜色不能持久.下面介绍的方法避免了上述缺点,可同时测定岩石中的3～4种矿物,着色高度稳定.此法适用于岩石样品的碳酸盐矿物染色.为便于染色反应,样品需有一个平整的切面.磨片后的剩余料就很适用.切面面积最好为2×2cm,但略多略少也可.
Dyeing reactions are often used to study the mineral composition of carbonate rocks, and the methods and colors used are different, but most can only identify one mineral or several minerals can only be colored in one color (Mann, Warne Etc.) to try carbonate (p-nitrophenyl-4-azobenzene diol - NO2C_3H_4N: NC_6H_3 [OH] _2) as a coloring agent in the carbonate minerals in the sample. The disadvantage of this method is only Ling Magnesium ore, a mineral coloring, and the color can not be sustained. The method described below to avoid the above shortcomings can be determined at the same time rock 3 to 4 minerals, coloring highly stable. This method is suitable for rock samples carbonate mineral staining To facilitate the dyeing reaction, the sample should have a smooth cut surface, and the remaining material after grinding is suitable. The cut area is preferably 2 × 2 cm, but slightly less.