 | | 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 |  | | Journal (article/letter/editorial) | | primary VMS, and the second is associated with kaolinite in dissolution cavities inside Ag halides during...rise in pH. Gold was likely remobilized with kaolinite from the surface lateritic zone, facilitated by...particularly in NE Sudan, Asmara, and Western Eritrea (Barrie et al. 2007, 2016). These supergene Au...consists of silica-barite rock or in an equivalent kaolinite-quartz-sulfate zone. This study contributes to...near-surface region above the Scuddles underground VMS deposit. Fig. 1 a Golden Grove Region in the Archaean |  | 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... zone and an asymmetric, small scale, quartz–kaolinite–alunite–chlorite zone surrounding the epidote–chlorite–carbonate...from gossanization and are dominantly quartz, kaolinite, and white mica (sericite); (5) mechanically transported...eastern margin of the Red Sea (Szymanski 2012). The region underwent a pre-rift Palaeozoic–Mesozoic cooling... INTERNATIONAL GEOLOGY REVIEW Quebec. III. The Ansil mine: Canadian Journal of Earth Science, v. 28, p. 1699–1730 |  | | 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...association; large tonnage Alteration nations, local kaolinite local massive sulfide lenses (Py> > Cpy > Sph...Lithotectonic Host rocks typeb dant proximal zeolite-kaolinite-Qz Alteration Specific geologic attributesc |  | Bierlein, Frank P., Potma, Warren, Cernuschi, Federico, Brauhart, Carl, Robinson, Jamie, Bargmann, Chris J., Bullen, Warwick, Henriquez, Jose F., Davies, Ian, Kennedy, Allen (2020) New Insights into the Evolution and Age of the Neoproterozoic Jebel Ohier Porphyry Copper Deposit, Red Sea Hills, Northeastern Sudan. Economic Geology, 115 (1) 1-31 doi:10.5382/econgeo.4691 | Journal (article/letter/editorial) | | Sudan highway is via an unpaved road to the Ariab mine and ~150 km of dirt tracks over open ground. An...(VMS) and gold deposits. 1 = Ariab/Hassai, 2 = Bisha, 3 = Bulghah, 4 = Sukurai, 5 = Galat Safur, 6 =...2015), Gabgaba (Managem, 2018), Sukari, Hassai, Bisha, and the Ariab mining district (Barrie et al., 2016;...Figs. 2, 3A) are the most well understood. The Old Mine Jebels area (the name makes reference to ancient...MMSZ = Malachite Mountain shear zone, OMJ = Old Mine Jebels, OW = Ohier West, QK = Quartz Knob. associated |  | | 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 (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...metal and is also commonly associated with acid mine drainage, and acid sulfate soil environments 16...Presence of pyrrhotite in mafic/ultramafic tropical region is an indicator for existence of economic nickel |  | | Journal (issue) | | association between karst scholars of the Dinaric region and France continues; Jean Nicod, doyen of the...compares its geographical source in the Dinaric region to its potential extent (the global outcrop of...that this was strong evidence that in any given region most karst flow must be converging into just a...B, that is above the general base level of the region (e.g., above sea level if close to the coast) The...the development of karst landforms in the Guilin region, Guangxi, China Embeyons ‘and fractures being |  | | Book | | pl). Tear-drop dunes in the southern Al Qa‘amiyat region of the south–eastern Rub‘ al Khali. Note slip face...classical example of dendritic drainage in an arid region was of interest as an analogue for the Mars scientific...north-eastern region Arabia Deserta (most of Syria and south-western Iraq), a north-western region Arabia Petraea...DICTIONARIES A desert is here defined as “a temperate region that receives an average annual rainfall of less...states that a desert is “a desolate and barren region, waterless and treeless, but with scanty herbage |  | | 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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