Chemical analysis of manganese nodules from the Cape Leeuwin field, southeast Indian Ocean

Manganese nodules from 36 stations in the Cape Leeuwin field were analyzed for Mn, Fe, Ni, Cu and Co and the results were combined with earlier work to demonstrate quantitative and geographic variations. Nodules in this field are moderately enriched in Ni, moderately depleted in Cu, and contain inte...

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Bibliographic Details
Main Author: Frakes, Lawrence A
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1982
Subjects:
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
Antarctic
Indian
Pacific
Southeast Indian Ridge
Wharton
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.857971
https://doi.org/10.1594/PANGAEA.857971
Description
Summary:Manganese nodules from 36 stations in the Cape Leeuwin field were analyzed for Mn, Fe, Ni, Cu and Co and the results were combined with earlier work to demonstrate quantitative and geographic variations. Nodules in this field are moderately enriched in Ni, moderately depleted in Cu, and contain intermediate values of Co. The sum of Ni + Cu vs. Mn/Fe plots along a hyperbolic regression line derived from nodules of the southeastern Pacific, suggesting that this relationship has general applicability. Regional variations in nodule grade (Ni + Cu + Co) assist in defining pathways of Antarctic Bottom Water between the Southeast Indian Ridge and the Wharton basin.

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