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Science. 1974 Nov 08;186(4163):529-31. doi: 10.1126/science.186.4163.529.

Manganese and biotic debris associations in some deep-sea sediments.

Science (New York, N.Y.)

J Greenslate

PMID: 17790381 DOI: 10.1126/science.186.4163.529

Abstract

Incipient manganese concretions occur in microcavities of planktonic skeletal debris (especially diatom frustules) in some Pacific Basin deep-sea sediments. These concretions contain over 50 percent manganese and very little iron (< 1 percent). There is a continuum of growth stages in the concretions having a diameter between 0 and approximately 2 millimeters, and a genetic relationship is suggested between the very small and the centimeter sized concretions.

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