Abstract
For the first time, the data of mercury content and its forms in the ferromanganese and ferruginous formations of the Chaun Bay (East Siberian Sea) were obtained. According to the geochemical classification, the studied formations belong to diagenetic. The level of mercury content ranges from 8 to 26 µg/kg, that is two to five times lower than the clarke for the upper part of the continental crust. The isomorphic (mineral) form of mercury is predominant in ferromanganese and ferruginous formations.
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