¬¬Genesis and structure of Cobalt rich Fe-Mnnodules and crust of Lakshadweep Ridge, Arabian Sea, India.

Genesis and structure of Cobalt rich Fe-Mn nodules and crust of
Lakshadweep Ridge, Arabian Sea, India.
Lakshadweep crust and nodules are found to be seamount hosted, and their geochemistry reflects the hydrogenetic origin slow growth rate ~1-2mm/Ma. Fe-Mn nodules in the Peremul Par area of Lakshadweep are of considerable size, with an average diameter of 15 cm and a thick oxide layer of 6 cm. Core of Fe-Mn nodules and crust are phosphatised. Internal structures and EPMA analysis show that phosphatisation has occurred in the substrate, the nucleus, and during the later stages of Fe-Mn precipitation.