Origins of Chalcocite Defined by Copper Isotope Values
The origin of chalcocite is explored through a comparison of the copper isotope values of this mineral from supergene enrichment, sedimentary copper/red bed, and high-temperature hypogene mineralization around the world. Data from the literature and the data presented here (n=361) reveal that chalco...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2018/5854829 |
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| author | R. Mathur H. Falck E. Belogub J. Milton M. Wilson A. Rose W. Powell |
| author_facet | R. Mathur H. Falck E. Belogub J. Milton M. Wilson A. Rose W. Powell |
| author_sort | R. Mathur |
| collection | DOAJ |
| description | The origin of chalcocite is explored through a comparison of the copper isotope values of this mineral from supergene enrichment, sedimentary copper/red bed, and high-temperature hypogene mineralization around the world. Data from the literature and the data presented here (n=361) reveal that chalcocite from high-temperature mineralization has the tightest cluster of values of δCu65=0±0.6 in comparison to sedimentary copper/red bed δCu65=-0.9±1.0 and supergene enrichment δCu65=+1.9±1.8. Although the errors of the means overlap, large portions of the data lie in different values, allowing for distinguishing ranges for δCu65 of <−1‰ for sedimentary copper/red bed, between -1 and +1 for high-temperature hypogene, and >+1 for supergene enrichment chalcocite. The copper isotope values of sedimentary copper/red bed and supergene enrichment chalcocite are caused by redox reactions associated with the dissolution and transport of copper, whereas the tighter range of copper isotope values for hypogene minerals is associated with processes active with equilibrium conditions. |
| format | Article |
| id | doaj-art-99c2e957ecfe4e35a569b833d2125d06 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | Geofluids |
| spelling | doaj-art-99c2e957ecfe4e35a569b833d2125d062025-08-20T03:36:48ZengWileyGeofluids1468-81151468-81232018-01-01201810.1155/2018/58548295854829Origins of Chalcocite Defined by Copper Isotope ValuesR. Mathur0H. Falck1E. Belogub2J. Milton3M. Wilson4A. Rose5W. Powell6Department of Geology, Juniata College, Huntingdon, PA, USANorthwest Territories Geological Survey, Yellowknife, NT, CanadaInstitute of Mineralogy UB RAS, Miass, RussiaNorthwest Territories Geological Survey, Yellowknife, NT, CanadaCarnegie Museum of Natural History, Pittsburgh, PA, USAPennsylvania State University, State College, PA, USACUNY Brooklyn College, New York City, NY, USAThe origin of chalcocite is explored through a comparison of the copper isotope values of this mineral from supergene enrichment, sedimentary copper/red bed, and high-temperature hypogene mineralization around the world. Data from the literature and the data presented here (n=361) reveal that chalcocite from high-temperature mineralization has the tightest cluster of values of δCu65=0±0.6 in comparison to sedimentary copper/red bed δCu65=-0.9±1.0 and supergene enrichment δCu65=+1.9±1.8. Although the errors of the means overlap, large portions of the data lie in different values, allowing for distinguishing ranges for δCu65 of <−1‰ for sedimentary copper/red bed, between -1 and +1 for high-temperature hypogene, and >+1 for supergene enrichment chalcocite. The copper isotope values of sedimentary copper/red bed and supergene enrichment chalcocite are caused by redox reactions associated with the dissolution and transport of copper, whereas the tighter range of copper isotope values for hypogene minerals is associated with processes active with equilibrium conditions.http://dx.doi.org/10.1155/2018/5854829 |
| spellingShingle | R. Mathur H. Falck E. Belogub J. Milton M. Wilson A. Rose W. Powell Origins of Chalcocite Defined by Copper Isotope Values Geofluids |
| title | Origins of Chalcocite Defined by Copper Isotope Values |
| title_full | Origins of Chalcocite Defined by Copper Isotope Values |
| title_fullStr | Origins of Chalcocite Defined by Copper Isotope Values |
| title_full_unstemmed | Origins of Chalcocite Defined by Copper Isotope Values |
| title_short | Origins of Chalcocite Defined by Copper Isotope Values |
| title_sort | origins of chalcocite defined by copper isotope values |
| url | http://dx.doi.org/10.1155/2018/5854829 |
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