 | | Journal (article/letter/editorial) | | 717–738 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 Decrée, Christian |  | 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 deposit—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 | 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...ilmenite. Bornite in these instances is replaced by covellite and/or chalcocite (Fig. 4c). Gold has been observed |  | | Journal (article/letter/editorial) | | amphibolite-facies metamorphism experienced in this region as a result of the 1.3–1.0 Ga Namaqua Orogeny and...and galena (gn) plus accessory digenite (dig)/covellite (cv) (Fig. 2; Table 1). The gn and dig/cv are...2007. The Bisha volcanic-associated massive sulfide deposit, western Nakfa Terrane, Eritrea. Econ. Geol |  | | Journal (article/letter/editorial) | | tonnages, as an open pit operation will typically mine large tonnages at lower grades, illustrating the...are among the earliest formed VMS deposits in the region (Walker and McDonald 1995; Goodfellow 2003). The...0 La Zarza 9.1 Karkaralinski Abyz (Karaganda region, Kazakhstan) 205.0 Gai 50.0 107.0 Yubileinoe...Bn with felsic sandstone accessory and dacites covellite, (footwall and digenite, Gn hanging wall) and...chlorite, Co cordierite, Cpy chalcopyrite, Cv covellite, Ep epidote, Fr freibergite, Gh gahnite, Gn galena |  | | 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...enrichment zone dominated by chalcocite with minor covellite and primary sulfides. 2. Supergene Cu-Zn-Pb-Fe-rich |  | | Journal (article/letter/editorial) | | deposit. Today, Sukari is the single major producing mine in US the Eastern Desert but many other significant...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...the Ariab district in Sudan (Fig. 1) and at Bisha in Eritrea (Helmy, 1999; Barrie et al., 2007, 2016; Johnson |  | | 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) | | visit to zincelead polymetallic ore deposit, Megan Mine, Germany. Source: Ref. 24. 10 1. ROCKS AND MINERALS...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...a visit to zincelead polymetallic deposit, Megan Mine, Germany. and extremely high specific gravity occurs...garnet schist from Kolihan Section, Khetri Copper Mine, India. Source: Prof. Martin Hale. FIGURE 1.28 |  | | Book (edition) | | the mineral industry and human consequences 11.6.1 Mine waste catastrophe 11.6.2 Mineral process plant failure...tailing in the future. The tailing of Kolar gold mine, India, historically stored at tailing dam, is being...and alloys Delicate acicular ore at Broken Hill mine, Australia, Friedrichssegen, Germany. Secondary...12 volatile Cobaltite, CoAsS Corundum, Al2O3 Covellite, CuS Cuprite, Cu2O Diamond, C (Fig. 1.14) Epidote...metal and is also commonly associated with acid mine drainage, and acid sulfate soil environments 16 |  | | 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...flow-sheet at a large mine has more steps and is more complicated than that at a small mine. Grade of ore. High-grade...The fact that the mill owner is also usually the mine owner is not sufficient insurance as to the adequacy |
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