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The Jebel Ohier deposit—a newly discovered porphyry copper–gold system in the Neoproterozoic Arabian–Nubian Shield, Red Sea Hills, NE Sudan
Citation
Bierlein, FP and McKeag, S and Reynolds, N and Bargmann, CJ and Bullen, W and Murphy, FC and Al-Athbah, H and Brauhart, C and Potma, W and Meffre, S and McKnight, S, The Jebel Ohier deposit a newly discovered porphyry copper-gold system in the Neoproterozoic Arabian-Nubian Shield, Red Sea Hills, NE Sudan, Mineralium Deposita, 51, (6) pp. 713-724. ISSN 0026-4598 (2016) [Refereed Article]
Copyright Statement
Copyright Springer-Verlag 2015
Official URL: http://dx.doi.org/0.1007/s00126-015-0630-z
DOI: doi:10.1007/s00126-015-0630-z
Abstract
Ongoing exploration in the Red Sea Hills of NE Sudan has led to the identification of a large alteration–mineralization system within a relatively undeformed Neoproterozoic intrusive–extrusive succession centered on Jebel Ohier. The style of mineralization, presence of an extensive stockwork vein network within a zoned potassic-propylitic-argillic-advanced argillic-altered system, a mineralization assemblage comprising magnetite-pyrite-chalcopyrite-bornite (±gold, silver and tellurides), and the recurrence of fertile mafic to intermediate magmatism in a developing convergent plate setting all point to a porphyry copper–gold association, analogous to major porphyry Cu–Au–Mo deposits in Phanerozoic supra-subduction settings such as the SW Pacific. Preliminary U–Pb age dating yielded a maximum constraint of c. 730 Ma for the emplacement of the stockwork system into a significantly older (c. 800 Ma) volcanic edifice. The mineralization formed prior to regional deformation and accretion of the host terrane to a stable continental margin at by c. 700 Ma, thus ensuring preservation of the deposit. The Jebel Ohier deposit is interpreted as a relatively well-preserved, rare example of a Neoproterozoic porphyry Cu–Au system and the first porphyry Cu–Au deposit to be identified in the Arabian–Nubian Shield.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | porphyry |
| Research Division: | Earth Sciences |
| Research Group: | Geology |
| Research Field: | Ore Deposit Petrology |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in the Earth Sciences |
| Author: | Meffre, S (Dr Sebastien Meffre) |
| ID Code: | 109846 |
| Year Published: | 2016 |
| Funding Support: | Australian Research Council (CE0561595) |
| Web of Science® Times Cited: | 1 |
| Deposited By: | CODES ARC |
| Deposited On: | 2016-07-04 |
| Last Modified: | 2017-09-05 |
| Downloads: | 0 |
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