Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones
Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching of the grain coatings show that the dissolved metals can constitute an ore-forming fluid, as hypothesized in models for sandstone-hosted ore...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/5513490 |
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| author | J. Parnell X. Wang A. Raab J. Feldmann C. Brolly R. Michie J. Armstrong |
| author_facet | J. Parnell X. Wang A. Raab J. Feldmann C. Brolly R. Michie J. Armstrong |
| author_sort | J. Parnell |
| collection | DOAJ |
| description | Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching of the grain coatings show that the dissolved metals can constitute an ore-forming fluid, as hypothesized in models for sandstone-hosted ore deposits. Median compositions of 37 samples, mostly of Triassic to Devonian age, from across Britain and Ireland are 6.3 ppm copper, 2.4 ppm cobalt, 10.1 ppm vanadium, and 0.3 ppm uranium. These contents at the basin scale are adequate to form the observed range of ore deposits in red beds. The migration of hydrocarbons or brines can cause the dissolution of grain coatings and contributes to controlling the distribution of ore deposits. Future measurements should test red beds derived from uplifted, mineralized plate margins, in which sandstones may be preloaded with ore metals. |
| format | Article |
| id | doaj-art-772efb49b1324f10ab802cb95b5d15e0 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-772efb49b1324f10ab802cb95b5d15e02025-02-03T06:05:43ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/55134905513490Metal Flux from Dissolution of Iron Oxide Grain Coatings in SandstonesJ. Parnell0X. Wang1A. Raab2J. Feldmann3C. Brolly4R. Michie5J. Armstrong6School of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UKTrace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UKTrace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UKTrace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UKSchool of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UKSchool of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UKSchool of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UKIron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching of the grain coatings show that the dissolved metals can constitute an ore-forming fluid, as hypothesized in models for sandstone-hosted ore deposits. Median compositions of 37 samples, mostly of Triassic to Devonian age, from across Britain and Ireland are 6.3 ppm copper, 2.4 ppm cobalt, 10.1 ppm vanadium, and 0.3 ppm uranium. These contents at the basin scale are adequate to form the observed range of ore deposits in red beds. The migration of hydrocarbons or brines can cause the dissolution of grain coatings and contributes to controlling the distribution of ore deposits. Future measurements should test red beds derived from uplifted, mineralized plate margins, in which sandstones may be preloaded with ore metals.http://dx.doi.org/10.1155/2021/5513490 |
| spellingShingle | J. Parnell X. Wang A. Raab J. Feldmann C. Brolly R. Michie J. Armstrong Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones Geofluids |
| title | Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones |
| title_full | Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones |
| title_fullStr | Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones |
| title_full_unstemmed | Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones |
| title_short | Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones |
| title_sort | metal flux from dissolution of iron oxide grain coatings in sandstones |
| url | http://dx.doi.org/10.1155/2021/5513490 |
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