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Published in:
2005 | OriginalPaper | Chapter
Iron transport in redbeds during the genesis of sediment-hosted stratiform copper deposits
Author : A. C. Brown
Published in: Mineral Deposit Research: Meeting the Global Challenge
Publisher: Springer Berlin Heidelberg
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While oxidized, chloride-rich, intersti-tial brines produce redbeds from rapidly deposited coarse-grained rift-basin fills, the redbeds may be leached of their trace copper contents, thereby providing a source of copper for the formation of sediment-hosted stratiform copper deposits in nearby greybeds. The reddening process should lower the Eh of the brine such that the brine becomes suitable for iron solubility. In a simple conceptual analysis, iron could be transported toward the greybeds ahead of the infiltration by cupriferous brines.