Abstract

Numerous phosphorite occurrences are located among the Riphean–Early Cambrian rocks of the Khingan Group (Lessr Khingan, JAO). They are associated spatially and genetically with uranium, iron, and manganese ore occurrences. The phosphorites of the Gremuchy occurrence are enriched in rare-earth elements (REE) and yttrium (up to 813.58 g/t), uranium (up to 52.23 g/t), and gold (up to 17.03 g/t), and can be considered as a complex of phosphorus–uranium–gold–rare-earth ores. REE-rich fluorapatite is the main concentrator of phosphorus in these rocks. REE do not form their own minerals, while gold, silver, and platinum are found as microinclusions. The concentrations of phosphorus, radioactive, and rare-earth elements are positively correlated with the organic carbon content, which supports their coprecipitation from seawater enriched in rare and rare-earth elements supplied by hydrothermal vents on the surface of the slope of seamount volcanoes.

中文翻译：

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俄罗斯远东小兴安岭Gremuchy发生的磷矿中的稀土元素和贵金属

摘要

兴安集团（莱瑟·兴安，JAO）的里菲安-早寒武纪岩石之间有大量的磷矿。它们在空间和遗传上与铀，铁和锰矿的发生有关。Gremuchy发生的磷矿富含稀土元素（REE）和钇（高达813.58 g / t），铀（高达52.23 g / t）和金（高达17.03 g / t），并且可以被认为是磷-铀-金-稀土矿石的复合物。富含稀土元素的氟磷灰石是这些岩石中磷的主要富集剂。REE不会形成自己的矿物质，而金，银和铂被发现是微量夹杂物。磷，放射性元素和稀土元素的浓度与有机碳含量呈正相关，