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Science 3 March 1978:
Vol. 199. no. 4332, pp. 969 - 971
DOI: 10.1126/science.199.4332.969
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Articles

Manganese Nodules on the Sea Floor: Inverse Correlation Between Grade and Abundance

H. W. MENARD 1 and J. Z. FRAZER 1

1 Scripps Institution of Oceanography, University of California, San Diego, La Jolla 92093

The grade of copper and nickel in manganese nodules is negatively correlated with their abundance on the sea floor, within small regions and in the Pacific Ocean as a whole. Although the correlation tells nothing about estimates of commercially mineable reserves at particular sites, it contradicts an assumption on which many predictions with respect to manganese nodule resources are based.

Submitted on June 13, 1977
Revised on November 25, 1977


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Manganese Nodules on the Sea Floor: Are Economic Mining Operations Feasible?.
F. J. Lampietti, F. J. LAMPIETTI, and L. F. MARCUS (1979)
Science 203, 565
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