Record Details

Ferromanganese micronodules from Bengal Fan

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Ferromanganese micronodules from Bengal Fan
 
Creator Chauhan, O.S.
Gujar, A.R.
Rao, Ch.M.
 
Subject ferromanganese nodules
fans
chemical analysis
manganese
iron
nickel
zinc
cobalt
todorokite
diagenesis
 
Description The occurrence of ferromanganese micronodules, hitherto unreported from any fan-valley system of the world, has been recorded from over 0.22 million km sup(2) area located in the middle fan region of the Bay of Bengal. Their abundance is higher in the eastern bay than in the western bay. Botryoidal and spheroidal are the two dominant morphological forms observed in the eastern and the western bay respectively. The bulk chemical analysis of the micronodules reveals that they have 24.1% Mn, depleted Fe (1.10%), Ni I0.089%), Zn (0.150%) and Co (0.01%), and a Mn/Fe ratio of 21.1. Todorokite in association with quartz, feldspar and phillipsite is observed in the nodules. The preliminary results suggest that Mn released from the smectite clay mineral and early diagenesis are the responsible for their formation
 
Date 2009-05-06T10:47:09Z
2009-05-06T10:47:09Z
1993
 
Type Journal Article
 
Identifier Giornale di Geologia, Vol.55; 3-9p.
http://drs.nio.org/drs/handle/2264/2854
 
Language en
 
Rights Copyright [1993]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Museo Geologico di Bologna