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Mineralogy of polymetallic nodules and associated sediments from the Central Indian Ocean Basin

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Mineralogy of polymetallic nodules and associated sediments from the Central Indian Ocean Basin
 
Creator Rao, V.P.
 
Subject Geology and Geophysics
sediments
mineralogy
ferromanganese nodules
ISW, Indian Ocean
 
Description 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 radiolarian sediments rich in montmorillonite, chlorite and illite, delta MnO sub(2) is the dominant mineral phase in the nodules of the southern Central Indian Ocean Basin. These nodules have a smooth surface texture, are relatively rich in Fe and Co, and are associated with pelagic clay-sized sediments comprising keels of foraminifera, zeolite and the clay minerals chlorite and illite. The formation of these mineral phases and their composition in the nodules may have been controlled by the properties of associated sediments and the nucleus of the nodule does not influence the oxide layer mineralogy
 
Date 1995-06-16T10:01:31Z
2017-09-29T13:48:11Z
1995-06-16T10:01:31Z
2017-09-29T13:48:11Z
1987
 
Type Journal Article
 
Identifier Marine Geology, vol.74; 1987; 151-157
0025-3227
http://drs.nio.org/drs/handle/2264/6068
 
Language en
 
Relation Mar Geol
SCI
 
Publisher Elsevier