Deep-sea Fe-Mn Crusts from the Northeast Atlantic Ocean: Composition and Resource Considerations

Muinos Bolhao, Susana, Hein, James R., Frank, Martin, Monteiro, José Hipólito, Gaspar, Luís, Conrad, Tracey, Pereira, Henrique Garcia and Abrantes, Fátima (2013) Deep-sea Fe-Mn Crusts from the Northeast Atlantic Ocean: Composition and Resource Considerations Marine Georesources & Geotechnology, 31 (1). pp. 40-70. DOI 10.1080/1064119X.2012.661215.

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Abstract

Eighteen deep-sea ferromanganese crusts (Fe-Mn crusts) from 10 seamounts in the northeast Atlantic were studied. Samples were recovered from water depths of 1,200 to 4,600 m from seamounts near Madeira, the Canary and Azores islands, and one sample from the western Mediterranean Sea. The mineralogical and chemical compositions of the samples indicate that the crusts are typical continental margin, hydrogenetic Fe-Mn crusts. The Fe-Mn crusts exhibit a Co + Cu + Ni maximum of 0.96 wt%. Platinum-group element contents analyzed for five samples showed Pt contents from 153 to 512 ppb. The resource potential of Fe-Mn crusts within and adjacent to the Portuguese Exclusive Economic Zone (EEZ) is evaluated to be comparable to that of crusts in the central Pacific, indicating that these Atlantic deposits may be an important future resource.

Document Type: Article
Additional Information: WOS:000313680900003
Keywords: ferromanganese crusts; northeast Atlantic; Portuguese EEZ; resource considerations; seamounts; RICH FERROMANGANESE CRUSTS; EARTH ELEMENT GEOCHEMISTRY; CENTRAL PACIFIC-OCEAN; COBALT-RICH; MEDITERRANEAN OUTFLOW; MARINE-ENVIRONMENT; INDIAN-OCEAN; NE ATLANTIC; SEAMOUNT; PLATINUM
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Kiel University
Refereed: Yes
DOI etc.: 10.1080/1064119X.2012.661215
ISSN: 1064-119X
Expeditions/Models:
Date Deposited: 15 Feb 2013 11:11
Last Modified: 22 Jun 2017 10:23
URI: http://eprints.uni-kiel.de/id/eprint/20529

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