Now showing items 1-5 of 5
Mineralogy of polymetallic nodules and associated sediments from the Central Indian Ocean Basin
Todorokite is the dominant mineral phase in the nodules of the northern Central Indian Ocean Basin. These nodules are characterised by a rough surface texture, are relatively rich in Mn, Cu and Ni, and are associated with ...
Mineralogy and chemistry of manganese nodules from the Southern part of Carlsberg Ridge
(Geological Society of India, 1985)
Petrographic study indicates that the nucleus of nodules is generally composed of clay, volcanic glass, basalt fragments, and earlier nodules. polished sections indicate typical collomorphic globular segregations and partly ...
Morphological and interlayer geochemical studies on manganese nodules from the southwestern Carlsberg ridge
Mixed facies of manganese nodules from the southwestern Carlberg Ridge have been analysed for Mn, Fe, Ni, Cu, Co and Zn. Seventy one analyses including the averages presented for outer layer, inner layer and near-core ...
Ferromanganese oxides from Mid-Indian ridge, seamounts and abyssal plains from the Indian Ocean
Mineralogical and chemical investigations show that todorokite is the only Mn mineral in the Mid-Indian Ridge ferromanganese, coatings, delta MnO2 in the seamount crusts, and well crystallised todorokite and minor amounts ...
Size analyses and geochemistry of ferromanganese nodules from the Central Indian Ocean Basin
Ferromanganese nodules collected during the 13th cruise of the M.V. Skandi Surveyor in 1987 cover a very large area, 71 424 km super(2) in the Central Indian Ocean. The area consists of 13 nodule types, which are grouped ...