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近年来对于含镍超基性岩中铜镍硫化物在岩浆中熔离成矿作用的概念,随着实验岩石学及矿相学的深入研究亦逐步深入和趋于完善。奥尔善斯基等人曾做过SiO_2、CaSiO_4、Al_2O_3对FeS 的溶解度影响的研究,表明硫化物的溶解度随熔浆中的SiO_2、CaO、Al_2O_3的增加而降低,有利于熔离作用发生。因此,在超基性岩中铜镍硫化物熔离富集成矿的假说就完全被人们所接受。即是在超基性岩浆中不混溶的硫化
In recent years, the concept of felting and mineralization of copper-nickel sulfides in magmatic nickel-bearing ultrabasic rocks has been gradually deepened and tends to be refined with the further study of experimental petrology and mineralogy. Orshansky et al. Have studied the effect of SiO 2, CaSiO 4 and Al 2 O 3 on the solubility of FeS. It shows that the solubility of sulfide decreases with the increase of SiO 2, CaO and Al 2 O 3 in the melt, which is beneficial to the melting. Therefore, the hypothesis that the Cu-Ni sulfide melts and enriches in the ultrabasic rocks is totally accepted. It is an immiscible sulfide in ultramafic magmas