- Title
- The Jebel Ohier deposit - a newly discovered porphyry copper-gold system in the Neoproterozoic Arabian-Nubian Shield, Red Sea Hills, NE Sudan
- Creator
- Bierlein, Frank; McKeag, S.; Reynolds, N.; Bargmann, C.; Bullen, W.; Murphy, F. C.; Al-Athbah, H.; Brauhart, C.; Potma, W.; Meffre, S.; McKnight, Stafford
- Date
- 2016
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/102445
- Identifier
- vital:10797
- Identifier
-
https://doi.org/10.1007/s00126-015-0630-z
- Identifier
- ISSN:0026-4598
- 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. DELSALAM MG, 1993, JOURNAL OF THE GEOLOGICAL SOCIETY, V150, P1065
- Publisher
- Springer-Verlag Berlin Heidelberg
- Relation
- Mineralium Deposita Vol. 51, no. 6 (2016), p. 713-724
- Rights
- Copyright © Springer-Verlag Berlin Heidelberg 2015
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0403 Geology; 0402 Geochemistry; Porphyry Cu-Au; Neoproterozoic; Red Sea Hills; U-Pb age dating; Arabian-Nubian Shield
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