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Ferro-manganese encrustation on the tympanic bulla of a minke whale from Central Indian Ocean Basin
Ear bone of a minke whale (Balaenoptera acutorostrata) was collected from 5200 m water depth with thin coating of Fe-Mn oxide on its surface. The Fe-Mn coating material was similar in nature and ratios Mn/Fe and Cu + Ni/Co ...
Growth rate and chemical composition of a manganese nodule from the EEZ of Seychelles
(Geological Society of India, 1989)
mhe ferro-manganese nodule collected in EEZ of Seychelles yields a growth rate of 1.5 mm/10 6Y 230Th (ex)/ and 230Th (ex)/ 232Th activity ratio methods indicating very slow growth of ferro-manganese nodules. The Mn/Fe and ...