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Bierlein, Frank P., Potma, Warren, Cernuschi, Federico, Brauhart, Carl, Robinson, Jamie, Bargmann, Chris J., Bullen, Warwick, Henriquez, Jose F., Davies, Ian, Kennedy, Allen (2020) New Insights into the Evolution and Age of the Neoproterozoic Jebel Ohier Porphyry Copper Deposit, Red Sea Hills, Northeastern Sudan. Economic Geology, 115 (1) 1-31 doi:10.5382/econgeo.4691

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Reference TypeJournal (article/letter/editorial)
TitleNew Insights into the Evolution and Age of the Neoproterozoic Jebel Ohier Porphyry Copper Deposit, Red Sea Hills, Northeastern Sudan
JournalEconomic Geology
AuthorsBierlein, Frank P.Author
Potma, WarrenAuthor
Cernuschi, FedericoAuthor
Brauhart, CarlAuthor
Robinson, JamieAuthor
Bargmann, Chris J.Author
Bullen, WarwickAuthor
Henriquez, Jose F.Author
Davies, IanAuthor
Kennedy, AllenAuthor
Year2020 (January 1)Volume115
Issue1
PublisherSociety of Economic Geologists
DOIdoi:10.5382/econgeo.4691Search in ResearchGate
Generate Citation Formats
Mindat Ref. ID224419Long-form Identifiermindat:1:5:224419:2
GUID0
Full ReferenceBierlein, Frank P., Potma, Warren, Cernuschi, Federico, Brauhart, Carl, Robinson, Jamie, Bargmann, Chris J., Bullen, Warwick, Henriquez, Jose F., Davies, Ian, Kennedy, Allen (2020) New Insights into the Evolution and Age of the Neoproterozoic Jebel Ohier Porphyry Copper Deposit, Red Sea Hills, Northeastern Sudan. Economic Geology, 115 (1) 1-31 doi:10.5382/econgeo.4691
Plain TextBierlein, Frank P., Potma, Warren, Cernuschi, Federico, Brauhart, Carl, Robinson, Jamie, Bargmann, Chris J., Bullen, Warwick, Henriquez, Jose F., Davies, Ian, Kennedy, Allen (2020) New Insights into the Evolution and Age of the Neoproterozoic Jebel Ohier Porphyry Copper Deposit, Red Sea Hills, Northeastern Sudan. Economic Geology, 115 (1) 1-31 doi:10.5382/econgeo.4691
In(2020, January) Economic Geology Vol. 115 (1) Society of Economic Geologists
Abstract/NotesAbstract
New SHRIMP U-Pb data from dioritic to granodioritic synmineral intrusions associated with the Jebel Ohier porphyry copper deposit (mineral inventory, including NI43-101-compliant total inferred and indicated resources, of 593 million tonnes [Mt] at 0.33% Cu and 0.05 ppm Au, for 1.953 Mt of contained Cu and 933,600 oz of Au at 0.15% Cu cutoff) in the Red Sea Hills of northeastern Sudan have bracketed the age of mineralization to ca. 816 to 812 Ma. This age range, as well as constraints from new and existing lithogeochemical data, is consistent with the deposit’s formation from a productive parental magma source during the early stages in the evolution of an intra-Mozambique Ocean island arc. The Jebel Ohier porphyry copper deposit bears many similarities to well-documented Phanerozoic analogues elsewhere in terms of (1) the mapped style and zonation of hydrothermal alteration (i.e., proximal K-silicate–dominated, to sericitic, to distal propylitic alteration), (2) the occurrence of intense Cu-bearing A- and B-type vein stockwork, as well as sulfide-only C-type veins, anhydrite veins, and younger, peripheral D-type veins, and (3) the geochemical fingerprint of the associated porphyry, which is akin to those of ore-related Tertiary porphyries in the Escondida area in northern Chile. The multiphase intrusion hosting the Jebel Ohier porphyry copper deposit has been intruded by several generations of mafic to felsic postmineralization dikes and voluminous plutons, with a peak in magmatic activity coinciding with the suturing of the Gebeit terrane at ca. 724 Ma. In spite of, or perhaps because of, the occurrence of extensive postmineralization magmatism, and regardless of subsequent deformation, regional metamorphism, uplift, and erosion, the deposit has remained remarkably intact. The discovery of a relatively ancient, yet well-preserved porphyry copper deposit in the Neoproterozoic Arabian-Nubian Shield has major implications for the exploration potential of this resource-rich geologic terrain.

Map of Localities

Locality Pages

LocalityCitation Details
Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Chrysocolla Mountain, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Jebel Ohier East, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Jebel Ohier North, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Malachite Mountain, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Ohier West, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Old Mine Jebels, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan
Quartz Knob, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudan

Mineral Occurrences

LocalityMineral(s)
Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudanβ“˜ Actinolite, β“˜ Albite, β“˜ Andesite, β“˜ Anhydrite, β“˜ Azurite, β“˜ Basalt, β“˜ Basaltic-andesite, β“˜ Biotite, β“˜ Bornite, β“˜ Breccia, β“˜ Calcium Amphibole Subgroup, β“˜ Chalcopyrite, β“˜ Chlorite Group, β“˜ Chrysocolla, β“˜ Dacite, β“˜ Diorite, β“˜ Dolerite, β“˜ Epidote, β“˜ Feldspar Group, β“˜ Goethite, β“˜ Granitoid, β“˜ Granodiorite, β“˜ Hematite, β“˜ Hornblende, β“˜ Hydrothermal breccia, β“˜ Jarosite, β“˜ K Feldspar, β“˜ Limonite, β“˜ Magnetite, β“˜ Malachite, β“˜ Molybdenite, β“˜ Muscovite, β“˜ Neotocite, β“˜ Phengite, β“˜ Plagioclase, β“˜ Porphyry, β“˜ Pseudomalachite, β“˜ Pyrite, β“˜ Quartz, β“˜ Quartz porphyry, β“˜ Quartz-feldspar porphyry, β“˜ Sericite, β“˜ Tenorite
Jebel Ohier East, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudanβ“˜ Calcium Amphibole Subgroup, β“˜ Feldspar Group, β“˜ Hornblende, β“˜ Kaolinite, β“˜ Malachite, β“˜ Muscovite, β“˜ Plagioclase, β“˜ Porphyry, β“˜ Pyrophyllite, β“˜ Quartz
Jebel Ohier North, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudanβ“˜ Muscovite, β“˜ Porphyry, β“˜ Pyrite, β“˜ Quartz, β“˜ Sericite
Malachite Mountain, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudanβ“˜ A-type granite, β“˜ Albite, β“˜ Amphibole Supergroup, β“˜ Amphibolite, β“˜ Anhydrite, β“˜ Basalt, β“˜ Basaltic-andesite, β“˜ Biotite, β“˜ Bornite, β“˜ Breccia, β“˜ Calcium Amphibole Subgroup, β“˜ Chalcopyrite, β“˜ Chlorite Group, β“˜ Diorite, β“˜ Dolerite, β“˜ Epidote, β“˜ Fault-breccia, β“˜ Feldspar Group, β“˜ Gabbrodiorite, β“˜ Granite, β“˜ Granitoid, β“˜ Granodiorite, β“˜ Hornblende, β“˜ Hornblende diorite, β“˜ Hydrothermal breccia, β“˜ K Feldspar, β“˜ Kaolinite, β“˜ Magnetite, β“˜ Malachite, β“˜ Monzogranite, β“˜ Muscovite, β“˜ Native Gold, β“˜ Ophiolite, β“˜ Plagioclase, β“˜ Porphyry, β“˜ Pyrite, β“˜ Pyrophyllite, β“˜ Quartz, β“˜ Quartz porphyry, β“˜ Quartz-feldspar porphyry, β“˜ Rhyolite, β“˜ Sericite, β“˜ Skarn, β“˜ Syenite, β“˜ Volcaniclastic rock
Quartz Knob, Jebel Ohier Porphyry Cu Deposit, Red Sea, Sudanβ“˜ A-type granite, β“˜ Albite, β“˜ Amphibole Supergroup, β“˜ Amphibolite, β“˜ Anhydrite, β“˜ Basalt, β“˜ Basaltic-andesite, β“˜ Biotite, β“˜ Bornite, β“˜ Calcium Amphibole Subgroup, β“˜ Chalcopyrite, β“˜ Chlorite Group, β“˜ Diorite, β“˜ Dolerite, β“˜ Epidote, β“˜ Feldspar Group, β“˜ Gabbrodiorite, β“˜ Granite, β“˜ Granitoid, β“˜ Granodiorite, β“˜ Hornblende, β“˜ Hornblende diorite, β“˜ K Feldspar, β“˜ Kaolinite, β“˜ Magnetite, β“˜ Malachite, β“˜ Monzogranite, β“˜ Muscovite, β“˜ Native Gold, β“˜ Ophiolite, β“˜ Plagioclase, β“˜ Porphyry, β“˜ Pyrite, β“˜ Pyrophyllite, β“˜ Quartz, β“˜ Quartz porphyry, β“˜ Quartz-feldspar porphyry, β“˜ Rhyolite, β“˜ Sericite, β“˜ Skarn, β“˜ Syenite, β“˜ Volcaniclastic rock

See Also

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Bierlein, F. P., McKeag, S., Reynolds, N., Bargmann, C. J., Bullen, W., Murphy, F. C., Al-Athbah, H., Brauhart, C., Potma, W., Meffre, S., McKnight, S. (2016) The Jebel Ohier depositβ€”a newly discovered porphyry copper–gold system in the Neoproterozoic Arabian–Nubian Shield, Red Sea Hills, NE Sudan. Mineralium Deposita, 51 (6) 713-724 doi:10.1007/s00126-015-0630-z
Bierlein, F.P.; Reynolds, N.; Arne, D.; Bargmann, C.; McKeag, S.; Bullen, W.; Al-Athbah, H.; McKnight, S.; Maas, R. (2016) Petrogenesis of a Neoproterozoic magmatic arc hosting porphyry Cu-Au mineralization at Jebel Ohier in the Gebeit Terrane, NE Sudan. Ore Geology Reviews, 79. doi:10.1016/j.oregeorev.2016.05.010
Day, S., Marquez, J.E. (2023) Selenium Distribution in the Gossan of a Porphyry Copper Deposit, Red Chris Mine, British Columbia, Canada. Economic Geology, 118 (3) 599-620 doi:10.5382/econgeo.4931
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Cernuschi, Federico, Dilles, John H., Osorio, Jaime, Proffett, John M., Kouzmanov, Kalin (2023) A Reevaluation of the Timing and Temperature of Copper and Molybdenum Precipitation in Porphyry Deposits. Economic Geology, 118 (5) 931-902 doi:10.5382/econgeo.5032
Ouyang, Hegen, Mao, Jingwen, Hu, Ruizhong (2020) Geochemistry and Crystallization Conditions of Magmas Related to Porphyry Mo Mineralization in Northeastern China. Economic Geology, 115 (1) 79-100 doi:10.5382/econgeo.4694
Pacey, Adam, Wilkinson, Jamie J., Boyce, Adrian J., Millar, Ian L. (2020) Magmatic Fluids Implicated in the Formation of Propylitic Alteration: Oxygen, Hydrogen, and Strontium Isotope Constraints from the Northparkes Porphyry Cu-Au District, New South Wales, Australia. Economic Geology, 115 (4). 729-748 doi:10.5382/econgeo.4732
Kobylinski, Christopher, Hattori, Keiko, Smith, Scott, Plouffe, Alain (2020) Protracted Magmatism and Mineralized Hydrothermal Activity at the Gibraltar Porphyry Copper-Molybdenum Deposit, British Columbia. Economic Geology, 115 (5). 1119-1136 doi:10.5382/econgeo.4724
Sasmaz, Ahmet (2020) The Atbara porphyry gold–copper systems in the Red Sea Hills, Neoproterozoic Arabian–Nubian Shield, NE Sudan. Journal of Geochemical Exploration, 214. 106539pp. doi:10.1016/j.gexplo.2020.106539
Wilkinson, Jamie J., Baker, Michael J., Cooke, David R., Wilkinson, Clara C. (2020) Exploration Targeting in Porphyry Cu Systems Using Propylitic Mineral Chemistry: A Case Study of the El Teniente Deposit, Chile. Economic Geology, 115 (4). 771-791 doi:10.5382/econgeo.4738
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