Abstract—

The formation of present-day seafloor sulfide deposits is accompanied by their continuous oxidation and crystallization of insoluble Fe oxyhydroxides, which absorb metals (including heavy metals) (Fallon et al., 2017). Due to the high sorption ability of Fe oxyhydroxides, it is suggested that the removal of metals during submarine oxidation into ambient seawater is insignificant (Fallon et al., 2017). Quantitative data on the redistribution of trace elements between primary sulfides and their oxidation products, however, are insufficient. Recently, we revealed the enrichment of trace elements in covellite with respect to primary sphalerite, chalcopyrite, and isocubanite (Melekestseva et al., 2017). In this study, we estimate the behavior of trace elements during submarine oxidation of sphalerite from smokers at the Irinovskoe hydrothermal field (Atlantic Ocean), which is intensely replaced by Fe oxyhydroxides. As a result, it is established that Fe oxyhydroxides are enriched in many trace elements with respect to sphalerite and the mode of their occurrence is identified.

中文翻译：

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Irinovskoe热液硫化物场（13°20′N，大西洋中脊）闪锌矿氧化过程中微量元素的行为

摘要-

如今的海底硫化物沉积物的形成伴随着不溶性铁氢氧化物的连续氧化和结晶，后者吸收金属（包括重金属）（Fallon等人，2017）。由于羟基氧化铁的高吸附能力，因此表明在将海底氧化成环境海水的过程中去除金属的作用微不足道（Fallon等人，2017）。然而，有关初级硫化物及其氧化产物之间微量元素再分布的定量数据不足。最近，我们揭示了在闪石中微量元素相对于原​​生闪锌矿，黄铜矿和异温石的富集（Melekestseva等人，2017）。在这个研究中，我们估计了Irinovskoe水热场（大西洋）中的烟民闪锌矿在海底氧化过程中的痕量元素的行为，该水合物强烈地被羟基氧化铁取代。结果，可以确定，相对于闪锌矿，羟基氧化铁中的许多痕量元素都富集，并确定了它们的发生方式。