Abstract New data on the minerals of the Fe–Ni–Co–Cu–S system in the differentiated intrusions of the Southern Urals are presented. Based on a detailed study of parageneses and associations of sulfide minerals, it was revealed that nickel enters the composition of two early formed phases (olivine and pentlandite) during melt differentiation, which leads to nickel “deficiency” and crystallization of cobalt (Co-bearing) minerals in late differentiates of the sulfide melt associated with gabbroids. Liquation isolations found in the rocks of the Misaelga complex, composed of unidentified phases, as well as the studied paragenetic intergrowths/exsolution structures, indicate that the sulfide melt had a multicomponent (Fe, Ni, Co, Cu, Zn) composition, crystallization of which in the local volume led to the formation of “intermediate” phases. It is shown that the onset of sulfide formation in the rocks of the Misaelga complex was realized in a magma chamber.

中文翻译：

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南乌拉尔苦铁矿侵入体中的 Fe-Ni-Co-Cu-S 系统矿物：硫化物熔体的液化和分化特征

摘要 提供了关于南乌拉尔差异侵入体中 Fe-Ni-Co-Cu-S 系统矿物的新数据。基于对硫化物矿物共生和组合的详细研究，发现镍在熔体分异过程中进入两个早期形成相（橄榄石和镍黄铁矿）的组成，导致镍“缺乏”和钴（含钴）结晶。 ) 晚期矿物与辉长岩相关的硫化物熔体的分化。在 Misaelga 复合体岩石中发现的液化分离，由不明相组成，以及研究的共生共生/出溶结构，表明硫化物熔体具有多组分（Fe、Ni、Co、Cu、Zn）组成，结晶这在局部体积中导致了“中间”相的形成。