Alexander-C. Brown
Article (2017)
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Published Version Terms of Use: Creative Commons Attribution . Download (1MB) |
Cite this document: | Brown, A.-C. (2017). Constraints on conceptual and quantitative modeling of early diagenetic sediment-hosted stratiform copper mineralization. Minerals, 7(10). doi:10.3390/min7100192 |
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Abstract
Early diagenetic sediment-hosted stratiform copper (eSSC) mineralization results from low-temperature cuprous chloride complexes carried by saline aqueous solution circulating through footwall aquifers. Favorable copper solubilities are attained in moderately oxidizing, near-neutral pH solutions. That specific oxidation level is not determined by co-existence with hematite, with its near-indiscriminant control over Eh. Instead, redbed footwall aquifers are signatures of diagenetic oxidation. Relentless in-situ oxidation of ferrous minerals in redbeds produces pore waters too reduced to transport copper, thus eliminating compaction waters as ore solutions. Continuous early influxes of descending oxygen-rich meteoric waters which have assimilated evaporitic salts may redden aquifers and still retain oxidation levels capable of carrying copper to form downstream eSSCs.
Uncontrolled Keywords
early diagenetic sediment-hosted stratiform copper (eSSC); genetic modeling; compaction-driven; topography-driven; meteoric water; oxidation (Eh)-pH controls
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Subjects: | 1400 Génie minier et minéral > 1400 Génie minier et minéral |
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Department: | Département des génies civil, géologique et des mines |
Research Center: | Non applicable |
Date Deposited: | 13 Jul 2021 15:17 |
Last Modified: | 14 Jul 2021 01:20 |
PolyPublie URL: | https://publications.polymtl.ca/4808/ |
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Journal Title: | Minerals (vol. 7, no. 10) |
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Publisher: | MDPI |
Official URL: | https://doi.org/10.3390/min7100192 |
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