Abstract

Gold placers of two streams that drain Permian dislocated terrigenous deposits overlying Cambrian metagabbroids and metadiorites in southern Sikhote-Alin have been studied. Fine crystals and grains of sperrylite, isoferroplatinum, cooperite, and submicron segregations of cuprorhodsite, rustenburgite, and an RhPtAsS₂ unnamed phase are developed in the cavernous surface. They have been revealed in the fine-grained fraction of heavy concentrates of the gold placers by the Scanning Electron Microscopy method. It was concluded that the metamorphic rocks served as a source of fluids and platinoids, crystallogenesis of which occurred at the geochemical reduction barrier in the dislocated carbonaceous–terrigenous deposits of the overlying complex.

中文翻译：

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南锡霍特-阿林（滨海边疆区）金砂矿中铂类矿物的性质

摘要

已经研究了两条河流的金砂矿，这些河流排出位于南部锡霍特-阿林的二叠纪错位陆源沉积物，覆盖在寒武纪变凝岩和变闪长岩上。在海绵状表面中发育了精细的闪锌矿、异铁铂、铜钴矿和亚微米偏析的铜锰矿、铁锈石和未命名的 RhPtAsS ₂相的晶体和颗粒。它们已通过扫描电子显微镜方法在金砂矿重精矿的细粒部分中显示出来。结论是变质岩是流体和铂类物质的来源，其结晶发生在上覆复合体错位的碳质-陆源沉积物的地球化学还原屏障上。