 | | Journal (article/letter/editorial) | | 717â738 The Bisha Volcanic-Associated Massive Sulfide Deposit, Western Nakfa Terrane, Eritrea C. TUCKER...Alberta, Canada T2G 0V2 Abstract The Neoproterozoic Bisha volcanic-associated massive sulfide deposit (VMS)...in a newly discovered VMS district in western Eritrea. The host stratigraphic section comprises a large...possibly coeval and cogenetic intrusion known as the Bisha Gabbroic Complex, ~3 km downsection, a series of...Two other VMS deposits are present along strike: Bisha Northwest, 1.5 km to the north-northwest, and Harena |  | | Book | | Tunisia, Mali, Mauritania, Egypt, Sudan, and Eritrea. Originally our goal was to include papers on deposits...the setting and origin of major deposits in the region, together with information on tonnages and grades...Northeast Africa, with a focus on deposits in Eritrea, Sudan, and Egypt. The second paper is by M. Bouabdellah...comparisons and contrasts with MVT deposits in the region. The last part is focused on sediment-hosted iron...Tunisia, and Comparisons with MVT Deposits in the Region . . . . . . . . . . 497 Sophie DecrĂ©e, Christian |  | | Journal (article/letter/editorial) | | made up of chalcopyrite, sphalerite, pyrite, pyrrhotite, and magnetite. These minerals are known to have...Ethiopia. It is situated within the emerging mining region of the Arabianâ Nubian Shield (ANS) that extends...with limited presence of sphalerite, galena, and pyrrhotite. Considerable amount of explorations were carried...chalcopyrite, sphalerite, galena, pyrite, and pyrrhotite. Gold and vast concentration of magnetite is...chalcopyrite, sphalerite, magnetite, galena, pyrrhotite, bornite, cubanite, bournonite, and cuprite are |  | | Journal (article/letter/editorial) | | geographic map, as well as the oldest geologic and mine map. The FawakhirâEl Sid district is part of a regional...mineralized quartz veins includes pyrite-arsenopyrite-pyrrhotite-sphalerite-galena-chalcopyrite-electrum plus...exploration activity, especially in Egypt, Arabia, Eritrea, and Ethiopia (Figure 1). Recent discoveries of...in Eritrea, and Tulu Kapi in Ethiopia, attest to a largely untapped gold potential in this region. Exploration...within the structural and thermal evolution of the region based on geochronological information, which is |  | 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 depositâa newly discovered porphyry copperâgold system in the Neoproterozoic ArabianâNubian Shield, Red Sea Hills, NE Sudan. Mineralium Deposita, 51 (6) 713-724 doi:10.1007/s00126-015-0630-z | Journal (article/letter/editorial) | | principal localities and principal mines (1 Ariab, 2 Bisha, 3 Jebel Sayid, 4 Sukari) The Jebel Ohier mineralized...mineralized system is situated in a remote desert region some 300 km to the west-northwest of Port Sudan...Shield (ANS) in NE Africa, a geologically complex region with demonstrated pedigree for world-class orogenic...volcanic-hosted sulfide deposits (e.g., Ariab, Bisha, and Jebel Sayid; Fig. 1), but hitherto considered...(1.5â6 wt% Fe), galena and bornite, and rare pyrrhotite (as small inclusions in pyrite porphyroblasts) |  | | Journal (article/letter/editorial) | | the micro scope, and at the northeastern end of Bisha goiwa, some portion of country rocks intrud ed into...small characteri are amounts of largely pyrrhotite magnetite. At the plex there from the ...to vein. is in oli grada differentiated pyrrhotite due contacts metres. olivine of characteristic...medium-grained gabbro. 22. Swarm complex hydrothermal mine of augite Mineral Fig. Murotomisaki is observed...chlorite, actinolite, prehnite, calcite, apa tite, pyrrhotite and pyrite. The mineral paragenesis and modal |  | Volesky, John C., Leybourne, Matthew I., Stern, Robert J., Peter, Jan M., Layton-Matthews, Daniel, Rice, Sarah, Johnson, Peter R. (2017) Metavolcanic host rocks, mineralization, and gossans of the Shaib al Tair and Rabathan volcanogenic massive sulphide deposits of the Wadi Bidah Mineral District, Saudi Arabia. International Geology Review, 59 (16) 1975-2002 doi:10.1080/00206814.2017.1307789 | Journal (article/letter/editorial) | | the Shwas mineral district east of WBMD, and the Bisha (Barrie et al. 2007) and Asmara mineral districts...pyrite and chalcopyrite with minor sphalerite, pyrrhotite, and magnetite. Sulphides are present as banded...eastern margin of the Red Sea (Szymanski 2012). The region underwent a pre-rift PalaeozoicâMesozoic cooling... INTERNATIONAL GEOLOGY REVIEW Quebec. III. The Ansil mine: Canadian Journal of Earth Science, v. 28, p. 1699â1730...2007, The Bisha volcanic-associated massive sulfide deposit, western Nakfa Terrane, Eritrea: Economic |  | | Journal (article/letter/editorial) | | amphibolite-facies metamorphism experienced in this region as a result of the 1.3â1.0 Ga Namaqua Orogeny and...2007. The Bisha volcanic-associated massive sulïŹde deposit, western Nakfa Terrane, Eritrea. Econ. Geol...melting of the assemblage sphalerite + galena + pyrrhotite + chalcopyrite + sulfur: implications for highgrade |  | | Journal (article/letter/editorial) | | particularly in NE Sudan, Asmara, and Western Eritrea (Barrie et al. 2007, 2016). These supergene Au...near-surface region above the Scuddles underground VMS deposit. Fig. 1 a Golden Grove Region in the Archaean...from bleached kaolinitic saprolite near Scuddles mine indicate an older weathering event assigned pre-late...through and surround the silcrete body in Scuddles mine area. Out of the 108 RC drill holes, regolith profiles...VMS mineralization consists of mainly pyrite, pyrrhotite, chalcopyrite, sphalerite, and galena and with |  | | Journal (article/letter/editorial) | | deposit. Today, Sukari is the single major producing mine in US the Eastern Desert but many other significant...veins dominated by pyrite, arsenopyrite, and (or) pyrrhotite, in addition to subordinate chalcopyrite, sphalerite...km from Sinai and eastern Egypt, through Sudan, Eritrea, and Ethiopia, and into Kenya (Fig. 1). Prior to...largescale open-pit and a high-grade underground mine. Franzmann et al (2015) report total T measured...underground operations in 2011. In 2012, the Sukari Gold Mine Co. mined 6.4 Mt of ore, processed 4.5 Mt of ore |  | Smith, C.W., Waters, B.C., Naqvi, M., Worl, R.G., Helaby, A.M., Flanigan, V.J., Sadek, H.S., Samater, R.M. (1983) Geological and geochemical studies in the Wadi Bidah District, Kingdom of Saudi Arabia. Open-File Report Vol. 1983 (83-672) US Geological Survey doi:10.3133/ofr83672 | Report (issue) | | THE B-24 ANOMALY AREA, KHAYAL AL MASNA'AH ANCIENT MINE................................. Geology..........PART OF THE B-24 ANOMALY AREA, MAHAWIYAH ANCIENT MINE.......................................... Geology..................... 62 63 63 64 MULHAL ANCIENT MINE..................................... 64 Geology...of airborne electromagnetic anomalies and ancient mine workings. ....... 4 Map of the northern part of...part of the B-24 anomaly area, Mahawiyah ancient mine. .................................... 53 Page |  | | Book | | Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and...useful for revealing the geodynamic evolution of a region, and more effective for regional prospecting exploration...Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and...evolution process of regional structures. This region is located within the southeastern margin of the...were significantly reworked during orogenies. The region witnessed migration and collision between the NCC |  | | Book (edition) | | the mineral industry and human consequences 11.6.1 Mine waste catastrophe 11.6.2 Mineral process plant failure...Chalcopyrite Clinopyroxene Galena Microcline Pyrrhotite Pyrite Quartz Sericite/sericitization Sphalerite...sphalerite (ZnS), galena (PbS), pyrite (FeS2), pyrrhotite (Fe(12x)S (x 5 0 to 0.2)) Sulfate Barites (BaSO4...(All types), mica (All types), pyrite (FeS2), pyrrhotite (Fen S(n11), etc. Tailing: The rejects of process...tailing in the future. The tailing of Kolar gold mine, India, historically stored at tailing dam, is being |  | | Book (edition) | | Chalcopyrite Cpx Clinopyroxene Ga Galena m Microcline Po Pyrrhotite Py Pyrite Q Quartz S Sericite/seritic/sericitization...visit to zincelead polymetallic ore deposit, Megan Mine, Germany. Source: Ref. 24. 10 1. ROCKS AND MINERALS...20 High-grade chalcopyrite (brassy-golden) and pyrrhotite-rich ore in chloriteeamphibole garnet schist...schist host rock at Kolihan Section, Khetri Copper Mine, India. 1.3. MINERALS 11 FIGURE 1.23 Chromite...texture in calc-silicate host rock at Rajpura-Dariba Mine, India. Source: Prof. Martin Hale. chromium with |  | | Book | | the arts is the proper focus of interest at every mine; that the operations converging on this point are...conditions The problem of ore treatment confronts every mine manager. Mining should be looked upon as a manufacturing...crushers that first take the ore as it comes from the mine (some of them can take 6-ft. cubes) are called COARSE... Minerals such as magnetite, franklinite and pyrrhotite are relatively so highly permeable as to be readily...flow-sheet at a large mine has more steps and is more complicated than that at a small mine. Grade of ore. High-grade |
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