 | | Journal (article/letter/editorial) | | Schneider The geology of the Lega Dembi gold deposit, southern Ethiopia: implications for Pan-African...January 1997 Abstract The Lega Dembi deposit is the largest gold producer in Ethiopia. It is situated in late-Precambrian...sediments of the N-S trending, volcanosedimentary Megado belt, which forms part of the lateProterozoic Adola...Adola granite-greenstone terrane in southern Ethiopia. The lode-gold mineralization occurs in a N-S trending...gneisses and the volcanosedimentary sequence of the Megado belt. This contact also marks the northernmost |  | | Journal (article/letter/editorial) | | Mineralization of the Lega Dembi Gold Deposit, Adola Gold Field, Southern Ethiopia Solomon Tadesse Department...Addis Ababa University, PO. Box 1176, Addis Ababa, Ethiopia (Manuscript received March 12,2003; accepted January...Abstract ........ The Lega Dembi Primary Gold Deposit in southern Ethiopia is related to the shear...related to mafic volcanism. Key words: Ethiopia, Lega Dembi, gold, volcano-sedimentary sequence, shear-zone...shear-zone gold. Introduction The Lega Dembi Primary Gold Deposit (LDPGD) is located about 500 km south |  | | Journal (article/letter/editorial) | | gold mineralization in the Okote area, southern Ethiopia DEBELE J. D EKSISSA1,2 and C HRISTIAN KOEBERL2*...KOEBERL2* 1 2 P.O. Box 28503, Addis Ababa, Ethiopia Department of Geological Sciences, University of Vienna...mineralization of the Okote area is located in southern Ethiopia. Three NS striking ductile shear zones, with different...Keywords: gold mineralization, fluid inclusion, Ethiopia, tourmaline, rare earth element deposit and ubiquitous...Except for the Lega-Dembi primary gold deposit, gold exploration performed at Megado belt for the last |  | | Journal (article/letter/editorial) | | can be incorporated. Silver, bismuth, antimony, and arsenic Substitution of silver into galena represents...1960) due to the requirement that one of the two silver atoms must be placed in a structurally unfavorable...1 mol%, and that Ag formed inclusions of native silver that showed no crystallographic relationship with...1976; Sharp and Buseck 1993; Ghosal and Sack 1999). Silver solubility in galena has been shown to reach 9...Costagliola et al. (2003) showed that metallic silver (Ag0) is an insignificant component in natural |  | | Report (issue) | | = 39.94(3) Z=3 X-ray Powder Pattern: OrijaĢrvi mine, Finland. 3.072 (100), 2.246 (80), 2.112 (80), 1...93 (2) 15.4 3.3 Total 99.88 100.0 (1) OrijaĢrvi mine, Finland; after deducting 4% of galena, sphalerite...rocks (OrijaĢrvi mine, Association: Chalcopyrite, bismuth, sphalerite, molybdenite, silver, pyrite, galena...galena (OrijaĢrvi mine, Finland); tetrahedriteātennantite, luzoniteāfamatinite, pyrite, mawsonite, nekrasovite...Distribution: In southwestern Finland, from the OrijaĢrvi mine, OrijaĢrvi [TL]. At Falun, Kopparberg, and Boliden |  | | Journal (article/letter/editorial) | | Finnish deposits; Mariko et al. (1973) from Kamaishi mine, Japan; Groves and Hall (1978) from Mount Windarra...the growth of metal excess-phases, in the case of silver-bearing ISS Fig. 5. Argentopentlandite structure...and Prewitt (1975) for the pentlandite from Frood Mine, its linear thermal expansion at 200Š¾Š” is 1.2%,... In the quartz-sulphide ores of Lega Dembi gold deposit in Ethiopia, Cook and Ciobanu (2001, and personal...Russian). Benvenuti, M. 1991. Ni-sulphides from Bottino mine Represented mineral relations are hard to observe |  | | Journal (article/letter/editorial) | | tellurides and selenides as accessories in goldāsilver ores of various types, as much as the material...have described āselenian pilseniteā from Lega Dembi, Ethiopia (Cook & Ciobanu 2001b) and include an analytical...native bismuth (Bi) and galena (Gn) from the Clogau mine, Dolgellau gold belt, North Wales, U.K. [Section...Creek, N.T., Australia: Henley et al. (1975), Suttsu mine, Japan: Shimizu et al. (1995), Nevskii, Russia:...reported from the same type-locality (Santa Catarina mine near Guanajuato, Mexico; see Earley 1950, Ramdohr |  | Liu, Haiming, Beaudoin, Georges, Makvandi, Sheida, Jackson, Simon E., Huang, Xiaowen (2021) Multivariate statistical analysis of trace element compositions of native gold from orogenic gold deposits: Implication for mineral exploration. Ore Geology Reviews, 131. 104061pp. doi:10.1016/j.oregeorev.2021.104061 | Journal (article/letter/editorial) | | Rosebel Burkina faso Essakane Finland KittilaĢ Ethiopia Lega Dembi Rae Bogatu, 2017 Pilote, 2000; Daigneault...(C) Rounded gold inclusion in chalcopyrite from Lega Dembi deposit. (D) Coarse gold in fractures in tourmaline...between Au and Ag, with R = 0.98, indicates that silver occurs in solid solution with gold (Fig. 4A). This...gold grains projected within the ultramaficāmafic region (Fig. 13B). Thus, the reĀ sults exemplify that...deposits, which are gold inclusions and veinlets. Silver, Fe, Pb, and Bi are the most important elements |  | | Journal (article/letter/editorial) | | and Golombek, 1988; Hargrove et al., 2006). This region formed mainly by accretion of volcanic island arcs...between 5 and 10% for trace elements. Gold and silver contents in selected samples have been determined...plate tectonics and metallogenesis in the Red Sea region. Geological Association of Canada, Special Paper...inclusions and stable isotopic studies at El-Sid Gold Mine, Eastern Desert. Journal of African Earth Science...Fritz, H., Loizenbauer, J., 2004. The Sukari gold mine, Eastern Desert-Egypt: structural setting, mineralogy |  | Zhang, Liang, Groves, David I., Yang, Li-Qiang, Sun, Si-Chen, Weinberg, Roberto F., Wang, Jiu-Yi, Wu, Sheng-Gang, Gao, Lei, Yuan, Lan-Ling, Li, Rong-Hua (2020) Utilization of pre-existing competent and barren quartz veins as hosts to later orogenic gold ores at Huangjindong gold deposit, Jiangnan Orogen, southern China. Mineralium Deposita, 55 (2) 363-380 doi:10.1007/s00126-019-00904-5 | Journal (article/letter/editorial) | | discussed below (Figs. 3, 4, 5, 6, 7, and 8). At the mine face and specimen scales, barren quartz veins several...ore block (Fig. 2). The gold grades of individual silver-poor orebodies vary from 4 to 10 g/t with an average...muscovite and chlorite. aād, f Vertical view of the mine face. e Tunnel roof. Abbreviations: Chl, chlorite;...of pyrite. The gold processing flowsheet at the mine reflects the two different gold occurrences as it...arsenopyrite, pyrite, muscovite, and quartz at the mine face (b; Zhang et al. 2018) and specimen (c) scales |  | | Journal (article/letter/editorial) | | deposit. Today, Sukari is the single major producing mine in US the Eastern Desert but many other significant...and eastern Egypt, through Sudan, Eritrea, and Ethiopia, and into Kenya (Fig. 1). Prior to Red Sea rifting...is a poorly CE exposed contact in Kenya and Ethiopia with a pre-Neoproterozoic crustal block referred...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 |  | | Journal (article/letter/editorial) | | Essakane, 20 = KittilaĢ, 21 = Meliadine, 22 = Lega Dembi, 23 = Fosterville, 24 = Sukhoi Log, 25 = La Lucette...porphyry deposits which plot in the negative t1 region (Fig. 13B). The distribution of samples on the...volcanogenic massive sulfide system: the 1806 zone, Ming mine, Newfoundland, Canada. Econ. Geol. 109, 1611ā1642...Raymond, W., Tripp, J., 1971. Primary distribution of silver and copper in native gold from six deposits in...Miner. Deposita 6, 321ā334. Desborough, G.A., 1970. Silver depletion indicated by microanalysis of gold from |  | | Journal (issue) | | Phenomenal geology + phenomenal team = phenomenal mine Khoemacau Delivering on expectations, planning the...interest you?ā what it requires to deliver a new mine, the editor at the time asked. āBecause I successfully...literally considering and busts and most my first mine visit recently, COVID-19. was to Mponeng ā The only...throughout all these underground gold changes is the need mine. Travelling to be resilient and around 3 km down...to positive change. I may Iāve been on many, many mine visits be leaving Mining Review Africa, but Iām |  | | Report (issue) | | MAURITANIA MALI NIGER ERITREA CHAD Khartoum* SUDAN ETHIOPIA UG Kampal RWANDA~:c-J:::;.:;.;:;'---.. Kigali...37 Egypt . . . . . . . . . . . . . . . . . . 41 Ethiopia, Djibouti, and Eritrea . . . 47 Gabon . . . ....of diversified experience in mineral exploration, mine design, development, and operations, as well as...:ifiecl) Cobalt, Alumi- Cbromite Ccment Dum mine, Co CODtent (tooa) Algeria 6,400 Angola '250...Cote d'Ivoire Ā·soo ā¢15 16,000 180 Gaboo 175 mine, u,o. Zn content cootent 432,400 2 192 4 |  | | Book (edition) | | the mineral industry and human consequences 11.6.1 Mine waste catastrophe 11.6.2 Mineral process plant failure...Ag Al As At Au B Bi Br C Ca Cd Ce Cl Co Cr Cu Silver Aluminium Arsenic Astatine Gold Boron Bismuth Bromine...system had been unearthed along the āAwas Riverā in Ethiopia following the East African Rift System. āMillennium...Minerals Native element Copper (Cu), gold (Au), silver (Ag), platinum (Pt), palladium (Pd), antimony (Sb)...tailing in the future. The tailing of Kolar gold mine, India, historically stored at tailing dam, is being |  | | Book | | useful for revealing the geodynamic evolution of a region, and more effective for regional prospecting exploration...important roles in the large scale regional gold, silver and polymetallic mineralization in this area; among...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...by chalcopyrite, galena, sphalerite, silver-gold ore, gold-silver ore, pyrrhotite, porphyry and malachite |
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