Geochemistry of Some Marine Fe–Mn Nodules and Crusts with Respect to Pt Contents |
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| Authors: | Alexandre Raphael Cabral Carl‐Diedrich Sattler Bernd Lehmann Harilaos Tsikos |
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| Affiliation: | 1. Department of Geology, Exploration Geology, Rhodes University, Grahamstown, South Africa,;2. Institute of Geology and Paleontology, and;3. Mineral Resources, Clausthal University of Technology, Clausthal‐Zellerfeld, Germany |
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| Abstract: | Bulk chemical analyses for Pt and Pd in marine Fe–Mn nodules and crusts from different provenances are presented, together with a wide range of elements. Platinum contents vary from 70–328 ppb, whereas Pd contents extend from 0.6–4.7 ppb only. Bromine and Pb show strong positive correlations with Pt. Lead is remarkably enriched in Fe–Mn precipitates over seawater, but Br is a conservative‐type element in seawater and shows no enrichment in Fe–Mn precipitates. Hence, the Pt–Br–Pb element association combines two elements, Br and Pb, of extremely contrasting enrichment factors in Fe–Mn precipitates. |
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| Keywords: | ferromanganese nodules and crusts geochemistry platinum content |
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