本文的目的是使岩浆岩的岩石化学计算能与一般岩石学(矿物岩石学)互相密切结合,以促进岩石学的研究.结合的途径是通过岩石化学计算,得出一套判别数值,作出图解,其结果应可大致确定深成岩所属的族,且与岩矿鉴定的结果相吻合.在此基础上,就能大致地确定喷出岩所属的族.用这个方法,还可以从岩石化学角度,对岩浆分异系列和 The purpose of this paper is to make the rock stoichiometry of magmatic rocks and general petrology (mineralogy) closely integrated with each other to promote the study of petrology by means of petrochemical calculation, a set of discriminant values, , The result should be able to roughly determine the pluton belongs to the family, and consistent with the results of rock and mineral identification on this basis, we can roughly determine the spray rock belonging to this method, but also from the petrochemical point of view, Differentiating series of magma and