CLASSIFICATION AND INTER-ELEMENT RELATIONSHIPS OF FERROMANGANESE NODULES FROM THE CENTRAL INDIAN-OCEAN BASIN

被引：0
|
作者：
JAUHARI, P
机构：
[1] Natl Inst of Oceanography, Dona Paula, India, Natl Inst of Oceanography, Dona Paula, India
来源：
MARINE MINING | 1987年 / 6卷 / 04期
关键词：
MINERAL INDUSTRY AND RESOURCES - Subaqueous;
D O I：
暂无
中图分类号：
P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
The chemical composition of polymetallic nodule samples from 180 locations in the Central Indian Ocean Basin based on 600 chemical analyses has been investigated. These nodules contain a Mn/Fe ratio varying from 0. 96 to 8. 76 and they broadly fall within the field of 'hydrogenous deposits. ' A finer classification reveals that there are three basically different types of nodules becoming enriched in metals by different depositional processes. Type B nodules having Mn/Fe ratio up to less than 2. 5 show hydrogenous enrichment, type A nodules having a ratio greater than 5 are early diagenetic type, and in between these two is the mixed type AB nodules, having Mn/Fe ratio between 2. 5 to 5 and formed by the influence of both processes.
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页码：419 / 429
页数：11
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