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Surface Characteristics & Growth Patterns in Some Manganese Nodules from the Central Pacific

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Title Surface Characteristics & Growth Patterns in Some Manganese Nodules from the Central Pacific
 
Creator Roonwal, G S
Friedrich, G H
 
Description 57-60
Scanning electron micrographs of nodules indicate that they are made up of small and large botryoids. When large botryoids are present as aggregates, the nodule texture becomes rough and smaller botryoids give smooth texture. Petrographic study indicates that the growth of nodule starts with the penetration and accumulation of Mn-oxides solutions around a nucleus. The nucleus is generally composed of fossiliferous clayey sediments containing grains ofvo1canic material, ancient nodules, and fish tooth. With subsequent accumulation of Mn-Fe materials around the nucleus, and diagenetic processes several features such as dentrites and cusps develop. Authigenic minerals also grow due to diagenic reconstitution.
 
Date 2016-12-21T09:47:28Z
2016-12-21T09:47:28Z
1981-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/39026
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.10(1) [March 1981]