Abstract—Hydrogenetic Fe–Mn crusts in the ocean are enriched in platinum but do not accumulate palladium. The mechanism of platinum input into the crusts remains debatable. There is even less data on ruthenium and iridium. In this article, the distribution of platinum group elements (Pd, Ru, Ir, Pt) in ferromanganese crusts of the Detroit guyot (Northwest Pacific) is studied. Based on correlation analyses of major and trace elements, it was shown that accumulation of PGE (Ru, Ir, Pt) occurs from hydrogenetic particulate Fe–Mn oxyhydroxides on all layers with exception of the bottom layer. High platinum contents in the bottom layer are also associated with its input from seawater. However, the most probable additional source of platinum was halmirolysis of underlying basalts.

摘要—海洋中的成因铁锰壳富含铂，但不会积聚钯。铂金进入地壳的机理仍然值得商bat。钌和铱的数据更少。本文研究了底特律盖奥特（西北太平洋）铁锰结壳中铂族元素（Pd，Ru，Ir，Pt）的分布。根据主要元素和痕量元素的相关分析，结果表明，除底层外，所有层上的氢-氧化铁-锰羟基氧化物均会产生PGE（Ru，Ir，Pt）的积累。底层的铂含量高也与海水的输入有关。但是，铂金最可能的附加来源是基础玄武岩的卤化。