Chemical analysis of of manganese nodules and crusts from the Pacific Ocean and the Blake Plteau

Ferromanganese deposits from the North Pacific and Blake Plateau have been sampled from potential mining sites either by the industry (Deepsea Ventures, Kennecott Corporation, Hughes) or by the Univeristy of Hawaii. The bulk composition of the different manganese nodules and crusts constituents was detrmined using Atomic absorption spectrometry analysis performed after acid leaching.