 | Ballo, Ibrahima, Hein, Kim A.A., Guindo, Boukary, Sanogo, Lassana, Ouologuem, Yalema, Daou, Gaoussou, Traore, Amadou (2016) The Syama and Tabakoroni goldfields, Mali. Ore Geology Reviews, 78. 578-585 doi:10.1016/j.oregeorev.2015.10.019 | Journal (article/letter/editorial) | | The syama and tabakoroni goldfields, Mali Ibrahima Ballo, Kim A.A. Hein, Boukary Guindo...Daou, Gaoussou, Traore, Amadou, The syama and tabakoroni goldfields, Mali, Ore Geology Reviews (2015), doi:...pertain. ACCEPTED MANUSCRIPT The Syama and Tabakoroni goldfields, Mali Ibrahima BALLOa; Kim A.A. HEINb;...Des Mines de Syama (SOMISY SA) Rue 50, Porte 688; BP-E 1582 Bamako, SC R Badalabougou, Mali: ibrahimab@somisy...Abstract Gold deposits in the Syama and Tabakoroni goldfields in southern Mali occur along a north-northeast |  | | Journal (article/letter/editorial) | | alteration and subsequent supergene oxidation in Goldfield, Nevada. The results indicate that pervasive weathering...present in the oxidation zones of ore deposits, acid mine drainages, hydrothermal ore deposits, hot springs...dating from two weathering profiles, Goldfield, Nevada, and Syama, Mali (West Africa). RENEWEDINTERESTin...time-space evolution of weathering processes. In Goldfield, Nevada, jarosite and alunite are often present...degassing step. GOLDFIELD JAROSITE ANALYSES: SAMPLES 2676 J 2677 13372 The first site, Goldfield, NV (Fig. |  | Cindy, , Sakai, Ryotaro, Mendoza, Diego M., Konadu, Kojo T., Sasaki, Keiko (2021) Significance of Acid Washing after Biooxidation of Sulfides in Sequential Biotreatment of Double Refractory Gold Ore from the Syama Mine, Mali. Minerals, 11 (12) 1316 doi:10.3390/min11121316 | Journal (article/letter/editorial) | | Biotreatment of Double Refractory Gold Ore from the Syama Mine, Mali Cindy, Ryotaro Sakai, Diego M. Mendoza ,...real double refractory gold ore from the Syama mines, Mali, which includes 24 g/t of Au and 5.27 wt%...Biotreatment of Double Refractory Gold Ore from the Syama Mine, Mali. Minerals 2021, 11, 1316. https:// Keywords:...example, the Prestea and Bogoso goldfield in Ghana, the Syama mine in Mali, the Sao Bento Mineracao in Brazil...Brazil, the Carlin Gold Mine of Nevada, the California motherlode, and the Pogo mine of Alaska in the USA |  | Olson, Steven F., Diakite, Kassoum, Ott, Lawrence, Guindo, Ambogo, Ford, Christopher R. B., Winer, Nicholas, Hanssen, Eric, Lay, Nilda, Bradley, Robin, Pohl, Demetrius (1992) Regional setting, structure, and descriptive geology of the middle Proterozoic Syama gold deposit, Mali, West Africa. Economic Geology, 87 (2) 310-331 doi:10.2113/gsecongeo.87.2.310 | Journal (article/letter/editorial) | | andDescriptiveGeologyof the Middle ProterozoicSyamaGold Deposit,Mali, West Africa STEVEN F. OLSON,* KASSOUM DIAKITE,...DEMETRIUS POHL* BHP-UtahMali, Inc., B.P. 2856, Bamako,Mali Abstract The Syamagold depositlies in a Birimian(2...of the middle ProterozoicBirimian 310 SYAMA Au DEPOSIT, MALI, WEST AFRICA 12Ow IOOW 8iW I 6iW 311...311 4øW --14ON ' Loul• M A L I o Bamako SYAMA 12øN -- , ' ' of'•fi•u'r.; ' . B R A I...international boundary in Ghana Mn mineral deposit or mine FIG. 1. Locationof the Syamagoldmineandotherdepositsin |  | Salvi, S., Sangaré, A., Driouch, Y., Siebenaller, L., Béziat, D., Debat, P., Femenias, O. (2016) The Kalana vein-hosted gold deposit, southern Mali. Ore Geology Reviews, 78. 599-605 doi:10.1016/j.oregeorev.2015.10.011 | Journal (article/letter/editorial) | | The Kalana vein-hosted gold deposit, southern Mali S. Salvi a,⁎, A. Sangaré b,c, Y. Driouch b, L. Siebenaller...Exploration, 3503 Av. Al Qods Hippodrome, BP 2699 Bamako, Mali d Avnel Gold Mining Limited, 39 Cheval Place, London...domain of the West African Craton, in the south of Mali. These formations are intruded successively by small... Oberthür et al., 1994; Allibone et al., 2002). Mali is second to Ghana as leading gold producer in West...Africa, with world-class deposits such as Morila and Syama to the south, and Sadiola, Yatela and Loulo to the |  | Kříbek, Bohdan, Sýkorová, Ivana, Machovič, Vladimír, Knésl, Ilja, Laufek, František, Zachariáš, Jiří (2015) The origin and hydrothermal mobilization of carbonaceous matter associated with Paleoproterozoic orogenic-type gold deposits of West Africa. Precambrian Research, 270. 300-317 doi:10.1016/j.precamres.2015.09.017 | Journal (article/letter/editorial) | | deposits in Burkina Faso (the Inata deposit), in Mali (the Syama deposit), and in Ghana (the Obuashi and Bogoso...in paragenesis with Au-bearing arsenopyrite or pyrite, seems to have been due to supersaturation of hydrothermal...extensive fracturing and cataclastic deformation of pyrite and arsenopyrite and with remobilization of older...deposits), Burkina Faso (the Inata deposit) and Mali (the Syama deposit) using methods of optical microscopy...associated with disseminated arsenopyrite and/or pyrite in CM-rich shear zones and adjacent relatively |  | | Journal (article/letter/editorial) | | and the largest Paleoproterozoic gold-producing region. The gold resources are concentrated within the...deposits are located in greenstone belts in Ghana, Mali, Senegal, Burkina Faso, Cote d’Ivoire (or Ivory...significance of the gold mineralization within this region. With an endowment of >2,500 t Au, the Obuasi deposit...(Mt) Grade (g/t) Au (t) Ghana 16 Burkina Faso 12 Mali 12 Guinea 9 Côte d’Ivoire 5 Senegal 5 Sierra...shield does indicate the high favorability of this region for concealed orogenic gold deposits. A hydrothermal |  | Ouiya, Pascal, Siebenaller, Luc, Salvi, Stefano, Béziat, Didier, Naba, Séta, Baratoux, Lenka, Naré, Athanase, Franceschi, Guy (2016) The Nassara gold prospect, Gaoua District, southwestern Burkina Faso. Ore Geology Reviews, 78. 623-630 doi:10.1016/j.oregeorev.2015.11.026 | Journal (article/letter/editorial) | | termination of the Boromo Belt. Gold is associated with pyrite and other Fe-bearing minerals that occur disseminated...occurrence where gold is associated to disseminated pyrite along quartz veins. © 2015 Elsevier B.V. All rights...mode (BSE) at an acceleration voltage of 20 kV. Pyrite crystals were analyzed for major element composition...assemblage of albite, chlorite, ankerite, quartz and pyrite (Figs. 5, 6b). This alteration is particularly...(SEM) image in backscattered mode (BSE) showing a pyrite crystal grown at the expense of a rutile–ankerite |  | Parra-Avila, Luis A., Kemp, Anthony I.S., Fiorentini, Marco L., Belousova, Elena, Baratoux, Lenka, Block, Sylvain, Jessell, Mark, Bruguier, Olivier, Begg, Graham C., Miller, John, Davis, James, McCuaig, T. Campbell (2017) The geochronological evolution of the Paleoproterozoic Baoulé-Mossi domain of the Southern West African Craton. Precambrian Research, 300. 1-27 doi:10.1016/j.precamres.2017.07.036 | Journal (article/letter/editorial) | | westernmost 51 portion when compared to the easternmost region. In addition, the new U-Pb data identify 52 ... some of the oldest felsic intrusions in the region, including a granite from Burkina Faso (2265 53...southern Mali. This study also reveals 54 inherited Archean zircon cores from across southern Mali. The...74 of involvement of older Archean crust in a region that is regarded to be the result of juvenile ...Nonetheless, most of 80 these studies are the result of mine-scale to belt-scale mapping projects, in many cases |  | | Journal (article/letter/editorial) | | deposits discovered, delineated and 62 developed in Mali, Mauritania, Senegal, Burkina Faso, Ghana and Cote...Ma in the Kédougou-Kéniéba Inlier in Senegal and Mali (Dioh et al., 2006), and 2181 172 - 2117 Ma in...1) crops out over 16 000 km2 in Senegal and 180 Mali, and is interpreted as the product of accretion...presence of the volcanic rocks in 247 the Dakar region indicates that magmatic activity, with concomitant...there are a number in Ghana, Burkina Faso and 260 Mali that formed before the Eburnean Orogeny (Tangaean |  | Mil�si, J.P., Ledru, P., Ankrah, P., Johan, V., Marcoux, E., Vinchon, Ch. (1991) The metallogenic relationship between Birimian and Tarkwaian gold deposits in Ghana. Mineralium Deposita, 26 (3) doi:10.1007/bf00209263 | Journal (article/letter/editorial) | | Marlu-Bogosu Tarkwaian-hosted Old Tarkwa TARKWA GOLDFIELD Teberebie Iduapriem Ntronang 584 175 50-70 40... 0,62 1.92 2.65 4.8 TARKWA: active mine Ntronang: closed mine Teberebie: orebody under development...post-schistose auriferous arsenopyrite, Ashanti mine. (Width of microphotograph represents 1.4 mm). $1...with gold-bearing arsenopyrite crystals, Ashanti mine min et al. 1988) consider that both the disseminated-sulphide...three successive mineralogical parageneses; 1. A pyrite-pyrrhotite-chalcopyrite paragenesis, observed at |  | Lawrence, D.M., Allibone, A.H., Chang, Z., Meffre, S., Lambert-Smith, J.S., Treloar, P.J. (2017) The Tongon Au Deposit, Northern Côte d’Ivoire: An Example of Paleoproterozoic Au Skarn Mineralization☼. Economic Geology, 112 (7) 1571-1593 doi:10.5382/econgeo.2017.4522 | Journal (article/letter/editorial) | | Au mineralization in southwest Ghana and western Mali. Dating provides further evidence that Au mineralization...the Boundiali belt 80 km to the west, with the Syama Au deposit located on its western margin (Olson...major curved reverse faults during a period of region-wide contractional deformation (e.g., Twiss and...Burkina Faso 10° N1140000N Sierra Leone 240000E Mali 4° W 200000E 180000E 14° N Senegal 8° W 220000E...Burkina Faso Border Nogbele pluton N Guinea Mali Border 0 Côte d'Ivoire Liberia Abidjan 250 |  | | Journal (article/letter/editorial) | | and B. Lehmann (Freyssinet et al. 1989), Syama Mine, Mali (Bowell et al. 1996), Kalgoorlie and Boddington...the potential of residual gold occurrences in the region. This eluvial mineralisation-style has not been...Fig. 1. Generalised geological map of the Dimako region with location of studied profile (adapted from...chlorite and tourmaline, and disseminated galena, pyrite, chalcopyrite, gold, barite. ** Quartz vein; n...mineralisation around Dimako The geology of the region around Dimako consists of deformed metamorphic |  | | Journal (article/letter/editorial) | | deposit A polymorph type in the Early Proterozoic of Mali (West Africa) A. Dommanget 1, J.P. Mil~si 1, and...Nationale de la G6ologieet des Mines, B.P. 223, Bamako, Mali Received: April 2, 1991/Accepted: June 3, 1992 Abstract...Proterozoic Birimian Formation, in the K6ni6ba region of SW Mali. Early work showed reserves in the Loulo-0...occurs as: (a) pre-D1 (deformation) disseminated pyrite with micron-size inclusions of gold particles;...the sulphides is small (10-40 gm), and occurs at pyrite-crystal edges, filling cracks and/or as inclusions |  | | Journal (article/letter/editorial) | | a number of deposits in Ghana, Burkina Faso and Mali that formed before the Eburnean Orogeny during a...Mauritania), mineral sands, iron ore (e.g., Nioro in Mali and Sassandra in Cote d'Ivoire), aluminium ore (e...Pipe in Sierra Leone) and gold (e.g., Yatela in Mali) (Markwitz et al., 2015; and references therein)...including mafic-intermediate volcanics (e.g., Syama in Mali), granitoids (e.g., Dokrupe in Ghana: Yao et...al., in press — this volume); Kalana in southern Mali; Sabodala in the KKI of Senegal; Bepkong in north-western |  | McFarlane, C. R. M., Mavrogenes, J., Lentz, D., King, K., Allibone, A., Holcombe, R. (2011) Geology and Intrusion-Related Affinity of the Morila Gold Mine, Southeast Mali. Economic Geology, 106 (5) 727-750 doi:10.2113/econgeo.106.5.727 | Journal (article/letter/editorial) | | Intrusion-Related Affinity of the Morila Gold Mine, Southeast Mali CHRISTOPHER R.M. MCFARLANE,1,† JOHN MAVROGENES...gold mine, hosted within Paleoproterozoic Birimian volcano-sedimentary rocks of southeast Mali, is spatially...characteristic of intrusion-related gold deposits globally. Mine Geology Morila is located approximately 200 km southeast...by large granitoid batholiths (Figs. 1, 2). The region is characterized by a thick subtropical weathering...Niamey Morila Burkina Faso BSZ Ouagadougou Mali Guinea 10° Sierra Leone Archean Man (Liberian) |  | Le Mignot, Elodie, Reisberg, Laurie, André-Mayer, Anne-Sylvie, Bourassa, Yan, Fontaine, Arnaud, Miller, John (2017) Re-Os Geochronological Evidence for Multiple Paleoproterozoic Gold Events at the Scale of the West African Craton. Economic Geology, 112 (1) 145-168 doi:10.2113/econgeo.112.1.145 | Journal (article/letter/editorial) | | each deposit, and dated by the Re-Os method on pyrite, arsenopyrite, and pyrrhotite grains that were...production of Ghana, which was the main gold-producing region in Africa before the discovery of the Witwatersrand...Inata Yatela Sadiola SENEGAL Loulo MALI Siguiri GUINEA Syama Kiaka Poura HO BO Fig.4A Gaoua...the Re-Os isotope system, focusing on sulfides (pyrite, arsenopyrite) that are petrographically associated...constraints using the Re-Os isotope system on sulfides (pyrite, arsenopyrite, and pyrrhotite) that can be shown |  | | Journal (issue) | | ...7 Lucara Going Underground at Karowe Diamond Mine........................................8 AROUND...Bar at Gold Road Mine........ 12 Asia: Centerra Gold Suspends Operations at Kumtor Mine..................the sessions, presentations from consultants, a mine planner and regulators offered advice on how to...has been compressed to one year. That means that mine planners and consultants must do much more work...acquisition adds a large-scale, long-life Canadian mine with current production of about 600,000 ounces |  | | Journal (article/letter/editorial) | | Sulfide Oxidation and Production of Gossans, Ashanti Mine, Ghana R. J. Bowell a a Department of Geology...Sulfide Oxidation and Production of Gossans, Ashanti Mine, Ghana, International Geology Review, 36:8, 732-752...Sulfide Oxidation and Production of Gossans, Ashanti Mine, Ghana1 R. J. BOWELL Department of Geology, The...at 00:31 19 March 2015 Abstract At the Justice mine, in the Ashanti goldfields of southwestern Ghana...mineralization, the most abundant sulfides are arsenopyrite, pyrite, pyrrhotite, and chalcopyrite with minor bornite |  | GUEYE, M., VAN DEN KERKHOF, A. M., HEIN, U. F., DIENE, M., MUCKE, A., SIEGESMUND, S. (2013) STRUCTURAL CONTROL, FLUID INCLUSIONS AND CATHODOLUMINESCENCE STUDIES OF BIRIMIAN GOLD-BEARING QUARTZ VEIN SYSTEMS IN THE PALEOPROTEROZOIC MAKO BELT, SOUTHEASTERN SENEGAL. South African Journal of Geology, 116 (2) 199-218 doi:10.2113/gssajg.116.2.199 | Journal (article/letter/editorial) | | mineralised zones occurs either as inclusions in pyrite or as native gold. Mineralisation typically occurs...16 -intrusive rocks. Sample locations: Sabodala mine (Sabmine); Sabodala south (SabS); Bambaraya (B4);...Sabodala, the largest, currently operational gold mine in Senegal. The structural setting, mineralisation...large-scale transcurrent shear zones like the Senegal-Mali shear zone are spatially associated, suggesting...Senegal-Mali shear zone includes the Loulo and Sadiola districts in western and northern Mali being one |  | Masurel, Quentin, Thébaud, Nicolas, Miller, John, Ulrich, Stanislav, Hein, Kim A.A., Cameron, Greg, Béziat, Didier, Bruguier, Olivier, Davis, James A. (2017) Sadiola Hill: A World-Class Carbonate-Hosted Gold Deposit in Mali, West Africa. Economic Geology, 112 (1) 23-47 doi:10.2113/econgeo.112.1.23 | Journal (article/letter/editorial) | | Hill: A World-Class Carbonate-Hosted Gold Deposit in Mali, West Africa* Quentin Masurel,1,† Nicolas Thébaud...rocks that crop out in eastern Senegal and western Mali. The geology of the inlier differs from other Paleoproterozoic...within 3 km of the Senegal-Mali shear zone, and country rocks in the region have undergone polycyclic...transcurrent tectonics, after the cessation of region-wide compressional deformation. The high-temperature...hydrothermal fluid circulation along the Senegal-Mali shear zone. Introduction The Paleoproterozoic terranes |  | | Journal (article/letter/editorial) | | raised the profile of the Society throughout the region by organizing technical sessions at conferences...mind-opening for me, and thesis work at the Island Copper mine in Vancouver Island was my first direct contact...established program run by Chris Ford in Mali, which discovered the Syama gold deposit. This was followed by...later told, extended mine life by several years. Mapping of the Tombulilato region in North Sulawesi, Indonesia...calculations to determine the stability range of arsenian pyrite, defined its solubility limit for gold, and showed |  | | Journal (article/letter/editorial) | | raised the profile of the Society throughout the region by organizing technical sessions at conferences...mind-opening for me, and thesis work at the Island Copper mine in Vancouver Island was my first direct contact...established program run by Chris Ford in Mali, which discovered the Syama gold deposit. This was followed by...later told, extended mine life by several years. Mapping of the Tombulilato region in North Sulawesi, Indonesia...calculations to determine the stability range of arsenian pyrite, defined its solubility limit for gold, and showed |  | | Journal (article/letter/editorial) | | raised the profile of the Society throughout the region by organizing technical sessions at conferences...mind-opening for me, and thesis work at the Island Copper mine in Vancouver Island was my first direct contact...established program run by Chris Ford in Mali, which discovered the Syama gold deposit. This was followed by...later told, extended mine life by several years. Mapping of the Tombulilato region in North Sulawesi, Indonesia...calculations to determine the stability range of arsenian pyrite, defined its solubility limit for gold, and showed |  | | Journal (article/letter/editorial) | | raised the profile of the Society throughout the region by organizing technical sessions at conferences...mind-opening for me, and thesis work at the Island Copper mine in Vancouver Island was my first direct contact...established program run by Chris Ford in Mali, which discovered the Syama gold deposit. This was followed by...later told, extended mine life by several years. Mapping of the Tombulilato region in North Sulawesi, Indonesia...calculations to determine the stability range of arsenian pyrite, defined its solubility limit for gold, and showed |
|
