Composition of Fe-Mn nodules and crusts from the Southwest Pacific

Relationship between mineral and geochemical specialization is established. A conclusion is made that ferromanganese mineralization is a permanent genetic series of matter supply: from endogenic (hydrothermal solution is a dominant source at deposition of chemical elements from mixture seawater plus hydrothermal solutions) to hydrogenic (seawater is a dominant source at element deposition).

This results in geochemical and mineralogical variety of ferromanganese mineralization within this part of the Pacific Ocean.