 | | Journal (article/letter/editorial) | | homepage: www.elsevier.com/locate/oregeorev The Guelb Moghrein Cu–Au deposit: Neoarchaean hydrothermal sulfide... Ilot D49 Tevrag Zeina, BP 5045, Nouakchott, Mauritania a r t i c l e i n f o Article history: Received...2015 Available online xxxx Keywords: Guelb Moghrein Mauritania IOCG Hydrothermal Cu–Au Retrograde shear...t r a c t The Guelb Moghrein copper–gold deposit in the Islamic Republic of Mauritania reopened in 2006...Sr and Ba. The copper–gold mineralization at Guelb Moghrein formed during retrograde shearing in metamorphic |  | | Journal (article/letter/editorial) | | 763–770 GUELB MOGHREIN: AN UNUSUAL CARBONATE-HOSTED IRON OXIDE COPPER-GOLD DEPOSIT IN MAURITANIA, NORTHWEST...Mines, Golden, Colorado 80401 USA Abstract The Guelb Moghrein Cu-Au deposit occurs within metacarbonate bodies...alteration-mineralization history. Early sodic alteration at Guelb Moghrein resulted in the formation of albitized zones...precipitation and/or recrystallization of sulfides. The Guelb Moghrein deposit is a member of the iron oxide Cu-Au...hosted in carbonate strata. Introduction The Guelb Moghrein Cu-Au deposit, approximately 250 km northeast |  | | Journal (article/letter/editorial) | | oxide–Cu–Au–Co mineralization at the Guelb Moghrein deposit, Akjoujt area, Mauritania Received: 3 June 2005 / Accepted:...March 2006 # Springer-Verlag 2006 Abstract The Guelb Moghrein Fe oxide–Cu–Au–Co deposit, with a total resource...chlorite, calcite, albite, and quartz. The Guelb Moghrein ore body is structurally controlled by shear...rocks, metacarbonates, and the Guelb Moghrein ore body of the Akjoujt metabasalt unit in the footwall...at 580±40°C. Thrusting was retrograde for the Akjoujt metabasalt unit, but prograde for the Sainte Barbe |  | | Journal (article/letter/editorial) | | discovered, delineated and 62 developed in Mali, Mauritania, Senegal, Burkina Faso, Ghana and Cote d’Ivoire...by post-Eburnean sedimentary cover of 130 the Guelb el Hadid sequence, and Mesoproterozoic to Paleozoic...continue 224 westwards beneath the younger Senegal-Mauritania basin. A major basin controlling, NW- 225 trending...east-west for 800 km from the Western Sahara and Mauritania to Algeria. The 237 basin contains largely...000 km2. It 243 extends from north-western Mauritania to southwest Guinea-Bissau. The basin contains |  | Acosta-Gongora, P., Gleeson, S. A., Samson, I. M., Ootes, L., Corriveau, L. (2015) Gold Refining by Bismuth Melts in the Iron Oxide-Dominated NICO Au-Co-Bi ( Cu W) Deposit, NWT, Canada. Economic Geology, 110 (2) 291-314 doi:10.2113/econgeo.110.2.291 | Journal (article/letter/editorial) | | States; Kuusamo schist belt, Finland; Guelb Moghrein deposit, Mauritania), suggests that Bi and Te could have...(Vanhanen, 2001), and the Cu-Au-Co ± Ni-Bi-Te-Ag Guelb Moghrein deposit (Kolb et al., 2006). These are atypical...< 271°C Bi melt Bi-Au infill Bm-Au infill Maldonite infill? Bm-Au infill - )2 HS Apy II ( Au...Au Ca-Fe-K altered rocks Decomposition of maldonite to Bismuthinite and Au Brittle deformation Apy...assemblage could also have resulted from decoupling of maldonite to Au and bismuthinite. Latest mineralization |  | | Journal (article/letter/editorial) | | and the largest Paleoproterozoic gold-producing region. The gold resources are concentrated within the...significance of the gold mineralization within this region. With an endowment of >2,500 t Au, the Obuasi deposit...such as iron oxide-copper-gold deposits (IOCG; Guelb Moghrain: Kolb et al., 2006), magmatic Ni-Cu-Pd...heavily for future greenfields exploration in Mauritania and adjacent countries comprising the shield...shield does indicate the high favorability of this region for concealed orogenic gold deposits. A hydrothermal |  | | Book | | deposits in Morocco, Algeria, Tunisia, Mali, Mauritania, Egypt, Sudan, and Eritrea. Originally our goal...the setting and origin of major deposits in the region, together with information on tonnages and grades...comparisons and contrasts with MVT deposits in the region. The last part is focused on sediment-hosted iron...deposits of the F’derik-Zouérate iron district in Mauritania, and presents the results of new airborne geophysical...Tunisia, and Comparisons with MVT Deposits in the Region . . . . . . . . . . 497 Sophie Decrée, Christian |  | | Book | | ("solutions", "melts", and " v a p o r s ' " in this region are not sharply distinguishable). However, this...fluid (supercritical), pass below 400 °C into the region of liquid aqueous solutions. At the same time their...Chemnitz, and several of the veins of the Freiberg region are distinguished by predominant lead-zinc ores...rocks and at contacts with effusive rocks. I n the region of the geosynclines rocks and mineral deposits...contact aureoles. The occurrences of the Nagpur-Kodur region in Bengal are imposing. Owing to the differences |
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