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Economic Geology; May 1965; v. 60; no. 3; p. 590-600
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Genesis of bedded phosphates

Mourad I. Youssef

Phosphate deposits are believed to be products of a biochemical rather than purely physicochemical process. Their formation is attributed to concentration and precipitation, in sheltered sea-bottom depressions, of phosphate carried down in plankton rain. The depressions are commonly of tectonic origin. Light-colored pyrite-poor or pyrite-free phosphorite forms where the bottom is occasionally aerated by strong waves.

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JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
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