 | | Journal (article/letter/editorial) | | Paleoproterozoic, turbidite-hosted, gold deposits of the Ashanti gold belt (Ghana, West Africa): Comparative analysis...analysis of turbidite-hosted gold deposits and an updated genetic model John Berge ⁎ JB MinQuest, Parkvägen...December 2010 Keywords: Turbidite-hosted gold deposits Graphite–gold association Interflow (chemical) sediments...fluids and gold a b s t r a c t The Paleoproterozoic gold deposits of the Ashanti gold belt, Ghana, occur...suggested in this article to belong to that class of gold deposits recognized as ‘turbidite-hosted’. Hence |  | Allibone, A., Teasdale, J., Cameron, G., Etheridge, M., Uttley, P., Soboh, A., Appiah-Kubi, J., Adanu, A., Arthur, R., Mamphey, J., Odoom, B., Zuta, J., Tsikata, A., Pataye, F., Famiyeh, S., Lamb, E. (2002) Timing and Structural Controls on Gold Mineralization at the Bogoso Gold Mine, Ghana, West Africa. Economic Geology, 97 (5) 949-969 doi:10.2113/gsecongeo.97.5.949 | Journal (article/letter/editorial) | | and Structural Controls on Gold Mineralization at the Bogoso Gold Mine, Ghana, West Africa ANDREW ALLIBONE...PATAYE, SAMMUEL FAMIYEH, Bogoso Gold Ltd, Airport Post Office, Accra, Ghana AND EDDIE LAMB Resource...Service Group, P.O. Box 16486, Accra, Ghana Abstract The Bogoso gold deposit comprises ~20 open pits scattered...jogs often coincide with intersecting minor faults. Gold is largely confined to the graphitic mylonite, which...folds. Approximately 75 percent of the gold extracted from the Bogoso district has been mined from a cluster |  | Allibone, A., Hayden, P., Cameron, G., Duku, F. (2004) Paleoproterozoic Gold Deposits Hosted by Albite- and Carbonate-Altered Tonalite in the Chirano District, Ghana, West Africa. Economic Geology, 99 (3) 479-497 doi:10.2113/gsecongeo.99.3.479 | Journal (article/letter/editorial) | | Paleoproterozoic Gold Deposits Hosted by Albite- and Carbonate-Altered Tonalite in the Chirano District, Ghana, West...Supergroup rocks of southwest Ghana host numerous mesothermal lode gold deposits, including the >38 million...(Moz) Ashanti deposit at Obuasi and other multimillion ounce deposits at Bogoso, Konongo, Prestea, Bibiani...Bibiani, and in the Yamfo-Sefwi region. Gold deposits of the Chirano district are localized along the Chirano...zones on the southeast margin of the Sefwi-Bibiani belt. Economically significant mineralization at Chirano |  | Perrouty, Stéphane, Aillères, Laurent, Jessell, Mark W., Baratoux, Lenka, Bourassa, Yan, Crawford, Brenton (2012) Revised Eburnean geodynamic evolution of the gold-rich southern Ashanti Belt, Ghana, with new field and geophysical evidence of pre-Tarkwaian deformations. Precambrian Research, 204. 12-39 doi:10.1016/j.precamres.2012.01.003 | Journal (article/letter/editorial) | | Eburnean geodynamic evolution of the gold-rich southern Ashanti Belt, Ghana, with new field and geophysical...2012 Keywords: Birimian Eburnean Paleoproterozoic Ghana Mineralisation a b s t r a c t Integration of regional...paleoproterozoic structural evolution of southwestern Ghana. The study area is dominated by three metavolcanic and metasedimentary...manifested as regional scale folding in the southern Ashanti Belt. D1 synorogenic granitoids were intruded between...under greenschist metamorphic condition. Syn-D1 gold mineralisation associated with quartz veining could |  | | Journal (article/letter/editorial) | | in Austria Evolution of gold mineralization in the Ashanti Gold Belt, Ghana: evidence from carbonate...rocks of the Bogosu and Prestea mining districts of the Ashanti Gold Belt, Ghana. The compositions of coexisting...and composition of fluids in the Bogosu-Prestea mesothermal gold system. Temperatures derived from the...alteration of mafic dikes, and 340 to 140 °C for gold deposition. The latter range occurs on a thin-section...Zusammenfassung Entstehung der Goldvererzung im Ashanti Gold Belt, Ghana: Riickschlfi'sse aus Karbonatzusammensetzungen |  | Oberthuer, Thomas, Mumm, Andreas Schmidt, Vetter, Ulrich, Simon, Klaus, Amanor, Joe A. (1996) Gold mineralization in the Ashanti Belt of Ghana; genetic constraints of the stable isotope geochemistry. Economic Geology, 91 (2) 289-301 doi:10.2113/gsecongeo.91.2.289 | Journal (article/letter/editorial) | | Vol.91, 1996,pp 289-301 Gold Mineralization in the Ashanti Belt of Ghana: GeneticConstraints of the... AMANOR AshantiGoldfields Company Ltd., Obuasi,Ghana Abstract The Ashantibeltof Ghanaisthekeydistrictof...ofprimary goldmineralization arepresent in theAshanti belt:(1)mesothermal, generally steeplydippingquartzveinsin...theDixcoveorbelt-type granitoids whichoccurwithin (e.g., Rye, 1993)gold deposits (seealsocontributions in the volcanicbelts...carbonin Birimianargillites andchertsfromGhana(Leube Gold Mineralization et al.,1990),anda stableisotope |  | | Journal (article/letter/editorial) | | Fluidsin the AshantiGoldBelt,Ghana: StableIsotopeGeochemistry of Carbonates, Graphite,andQuartz A. H. MUMIN...aeeretionary complex. Thegoldoresarelocalized withinthe Ashanti structural beltwhichwe suggest becamea conduitfor...and0 to 1.5 per mil for carbon. IN THEBogosu, Prestea, andAshanti goldminingdistricts of 3 to 6 per mil...(e.g.,AnstheEarlyProterozoic (•2.1 Ga)Ashanti goldbeltof Ghana, Studies carbonate minerals andquartzareubiquitous...theAshanti rangedfrom -28.3 to -11.4 and -17.0 Graphite ispresent in all Birimianrocksof rima sedimen- |  | | Journal (article/letter/editorial) | | content of fluid inclusions in gold mineralisations in the Ashanti Belt, Ghana: a new category of ore forming...samples from the Ashanti, Konongo-Southern Cross, Prestea, Abosso/ Damang and Ayanfuri gold deposits in the...the Ashanti Belt, Ghana. Primary fluid inclusions in quartz from mineralised veins of the Ashanti, Prestea...mineralisation. Here inclusions associated with the gold mineralisation contain a low salinity (<6 eq.wt...inclusions of 0.65 to 1.06 g/cm3 at Ashanti, 0.85 to 0.98 g/cm3 at Prestea, up to 1.02 g/cm3 at Konongo-Southern |  | 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) | | relationship between BMmian and Tarkwaian gold deposits in Ghana J.P. Mil~si 1, p. Ledru 1, p. Ankrah z...GeologicalSurvey Department, PO Box M. 80, Accra, Ghana Received: November 14, 1989/Accepted: December 12...traditional concept of the Early Proterozoic gold deposits in Ghana i.e. gold-bearing shear zones overlain by Tarkwaian...Tarkwaian paleoplacers containing reworked gold derived from the shear-zones - needs to be reconsidered...reconsidered in the light of recent research in Ghana, the Ivory Coast and French Guiana. This research has revealed |  | 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) | | matter associated with Paleoproterozoic orogenic-type gold deposits of West Africa Bohdan Kříbek a,∗ , Ivana...September 2015 Keywords: Carbonaceous matter Graphite Gold deposits Paleoproterozoic West Africa a b s...orogenic-type gold deposits in Burkina Faso (the Inata deposit), in Mali (the Syama deposit), and in Ghana (the...(the Obuashi and Bogoso deposits). Two types of CM occur in all the studied deposits: metamorphosed and...reserved. 1. Introduction Many mesozonal orogenic gold deposits in metasediments (Groves et al., 2003; |  | | Journal (article/letter/editorial) | | Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana a Napoleon Q. Hammond...Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana, International Geology...Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana NAPOLEON Q. HAMMOND...Abstract The Prestea lode gold deposit occurs in a graphitic shear zone in the Birimian system of Ghana. The...Proterozoic greenstone assemblage (**« 2100 Ma) with large gold deposits, consisting of a lower unit predominantly |  | | Journal (article/letter/editorial) | | Proterozoic Birimian Supergroup of Ghana and Some Aspects of its Associated Gold Mineralization ALFRED LEUBE...2Geological Survey Department, Box M80, Accra (Ghana) Abstract Leube, A., Hirdes, W., Mauer, R. and...Proterozoic Birimian Supergroup of Ghana and some aspects of its associated gold mineralization. Precambrian..._+66 Ma) form part of the West African craton. Ghana contains the eastern portion of the Birimian terrane...chemistry ), characterize the Birimian Supergroup of Ghana. The belts are separated by basins containing isoclinally |  | | Journal (article/letter/editorial) | | West Africa: The World’s Premier Paleoproterozoic Gold Province* Richard J. Goldfarb,1, 2,† Anne-Sylvie...approximate 10,000-metric ton (t) gold endowment, is one of the world’s great gold provinces and the largest...largest Paleoproterozoic gold-producing region. The gold resources are concentrated within the 2250 to 2000...major orebodies are best classified as orogenic gold deposit types, although there are paleoplacer and...belts, and perhaps local intrusionrelated gold systems. The gold-hosting, mainly greenschist metamorphic |  | Feybesse, Jean-Louis, Billa, Mario, Guerrot, Catherine, Duguey, Emmanuel, Lescuyer, Jean-Luc, Milesi, Jean-Pierre, Bouchot, Vincent (2006) The paleoproterozoic Ghanaian province: Geodynamic model and ore controls, including regional stress modeling. Precambrian Research, 149 (3) 149-196 doi:10.1016/j.precamres.2006.06.003 | Journal (article/letter/editorial) | | initiated the creation of crustal segments (Sefwi, Ashanti, Kibi belts, . . .). This was followed at around...regional-scale, first-order D2 faults (e.g. the Konongo-Ashanti-Prestea Fault) acted as channels exercising a control...displacement and geometry of a rigid block (southeastern Ghana) coinciding with a high stress zone. Tectonic forces...faults centred on the western border of the Ashanti Belt and formed a synclinorium centred on the Tarkwaian...order to determine the relationship between the gold-bearing hydrothermal event and the geodynamic evolution |  | | Book | | Ver' "\ ~~ • THE MINERAL AND ROCK RESOURCES OF GHANA f btYON RALPH Dedicated to my parellfs for not...ISBN 90 6191 597 X paper edition only for sale in Ghana © 1985 A.A.Balkema, P.O.Box I 675, 3000 BR Rotterdam...REPUBLIC OF GHANA- GEOGRAPHY,PHYSIOGRAPHY,GEOLOGY AND GEOHYDROLOGY 6 3. THE MINERALRESOURCESOF GHANA - BACKGROUND...EXPLOITATION IN GHANA 572 12. TABLES OF SUMMARY OF MINERAL AND ROCK RESOURCESOF GHANA 577 13. LEGISLATION...590 APPENDIX 597 INDEX 602 V Preface The Ghana Geological SuJ;"vey DepaJ;"tment in 1.962, published |  | | Journal (article/letter/editorial) | | Relationship between gold and manganese mineralizations in the Birimian of Ghana, West Africa Y. NTIAMOAH-AGYAKWA...relationship with gold mineralization are still in progress. Both manganese and gold occur as stratabound...conditions, other elements associated with Birimian gold mineralization, notably copper and arsenic, are...be a useful pathfinder element in the search for gold in tropical lateritic soils derived from Precambrian...greenstones. 1. Introduction The Tarkwaian belt of Ghana (Fig. 1), where mining activities date back |  | Fougerouse, Denis, Micklethwaite, Steven, Ulrich, Stanislav, Miller, John, Godel, Bélinda, Adams, David T., McCuaig, T. Campbell (2017) Evidence for Two Stages of Mineralization in West Africa’s Largest Gold Deposit: Obuasi, Ghana. Economic Geology, 112 (1) 3-22 doi:10.2113/econgeo.112.1.3 | Journal (article/letter/editorial) | | Mineralization in West Africa’s Largest Gold Deposit: Obuasi, Ghana Denis Fougerouse,1,† Steven Micklethwaite...Highway, Crawley, Western Australia 6009, Australia Ashanti Ltd., Assets Development Brownfields, 140 St George...6009, Australia Abstract The supergiant Obuasi gold deposit is the largest deposit in the Paleoproterozoic...Birimian terranes of West Africa with 62 Moz of gold (past production + resources). The deposit is hosted...Obuasi and contribute equally to the gold budget. These are (1) gold-bearing sulfides, dominantly arsenopyrite |  | 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) | | Birimian(2.0-2.2 Ga) greenstonebelt in southernMali. Gold mineralizationis hostedby a thin (0.5-2.0 km) but...veinlets,andbrecciabodies.Pyriteis the principal gold-bearingmineral and occursdisseminatedin veinlet...ankerite,albite,andsericitealterationin the pyritic gold-bearingzones.Silica, Na20, Au, COe, S, and C havebeen... Tim Syamagolddepositis locatedin southernMali Ghana. 0361-0128/92/1313/310-2153.00 near the edge of...ß . x Jea• lOON--. x x '•1 xAux xKalana x GHANA 8ON-- X X X• • X'• x X xX x•.•J•i LEONE %x I' |  | | Journal (article/letter/editorial) | | from Himalayan leucogranites, 29; peraluminous graphite-bearing dacites from the Erlend volcanic complex...sulphosalts, from Neogene vein mineralisation, Baia Bora area, Maramure, Romania, 387 A~rror~,n, P., 423 Apatite...Precambrian age from southern Israel, 111 Apollo mine, Siegerland, Germany, a case study of mineral reactions...sulphosalts from Neogene vein mineralisation, Baia Bora area, Maramure, Romania, 387 Bismuthinite derivatives...derivatives from Neogene vein mineralisation, Baia Bora area, Maramure, Romania, 387 Bismuthotellurides (Pd), and |  | | Journal (article/letter/editorial) | | Fluid Source for Orogenic Gold Mineralization at the Damang Deposit, Ghana Alistair J.R. White,1,2,†...Abstract Gold mineralization at the Damang deposit is unique among currently known orogenic gold deposits...deposits in Ghana, comprising gold hosted within metasediments of the Tarkwaian System and contained in a subhorizontal...metamorphic, igneous, and metasomatic events. Orogenic gold mineralization occurred late in the geologic paragenesis...fluids and the host rock resulted in precipitation of gold in association with sulfide-carbonate-potassic alteration |  | | Report (issue) | | industrial mineral industries are included. Volume II, Area Reports: Domestic, contains chapters on the minerals...summary of domestic nonfuel minerals. Volume III, Area Reports: International, contains the latest available...annual international review is presented as five area reports and one world overview: Mineral Industries...47 Gabon . . . . . . . . . . . . . . . . . . 51 Ghana . . . . . . . . . . . . . . . . . . 57 Guinea ....of diversified experience in mineral exploration, mine design, development, and operations, as well as |  | Lambert-Smith, James S., Lawrence, David M., Vargas, Carlos A., Boyce, Adrian J., Treloar, Peter J., Herbert, Sarah (2016) The Gounkoto Au deposit, West Africa: Constraints on ore genesis and volatile sources from petrological, fluid inclusion and stable isotope data. Ore Geology Reviews, 78. 606-622 doi:10.1016/j.oregeorev.2015.10.025 | Journal (article/letter/editorial) | | 2015 Keywords: Gounkoto gold deposit Fluid inclusions Stable isotopes Orogenic gold mineralisation Birimian...orogenic gold deposits, situated along the Senegal–Mali Shear Zone. This west Malian gold belt represents...represents the largest West African orogenic gold district outside Ghana. The Gounkoto deposit is hosted to the...the south of the Gara and Yalea gold mines in the Kofi Series metasedimentary rocks. The ore body is structurally...deposits as well as numerous satellites. With the Loulo Mine (Gara and Yalea deposits) to the north, the Gounkoto |  | Lambert-Smith, James S., Allibone, Andrew, Treloar, Peter J., Lawrence, David M., Boyce, Adrian J., Fanning, Mark (2020) Stable C, O, and S Isotope Record of Magmatic-Hydrothermal Interactions Between the Falémé Fe Skarn and the Loulo Au Systems in Western Mali. Economic Geology, 115 (7). 1537-1558 doi:10.5382/econgeo.4759 | Journal (article/letter/editorial) | | Park Place, Cardiff, CF10 3AT, United Kingdom Gold (Holdings) Ltd, 3rd Floor, Unity Chambers, 28 Halkett...the ultimate source of the ore fluids in orogenic gold deposits, with the metals scavenged from the same...sedimentary rocks, ca. 2200-2160 Ma Damang Prestea, Bogoso 0º -10º Chirano Birimian sedimentary basins...2135-2100 Ma Archean rocks, Kenema-Man Domain Gold deposit size skarn Eburnean basin orogenic Eoeburnean...data Exploration targets 235E 230E 225E Au mine Gefa Faults, fractures and shear zones from drilling |  | 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) | | Sequential Biotreatment of Double Refractory Gold Ore from the Syama Mine, Mali Cindy, Ryotaro Sakai, Diego M...pretreatment of double refractory gold ores (DRGO) to improve gold recovery without emitting pollutant...bioprocesses was evaluated using a real double refractory gold ore from the Syama mines, Mali, which includes 24...the acid washing process significantly improved gold recovery by cyanidation to yield to 84.9 ± 0.7%...of carbonaceous matter prior to the extraction of gold; however, the details should be modified depending |  | Lawrence, D. M., Treloar, P. J., Rankin, A. H., Harbidge, P., Holliday, J. (2013) The Geology and Mineralogy of the Loulo Mining District, Mali, West Africa: Evidence for Two Distinct Styles of Orogenic Gold Mineralization. Economic Geology, 108 (2) 199-227 doi:10.2113/econgeo.108.2.199 | Journal (article/letter/editorial) | | Africa: Evidence for Two Distinct Styles of Orogenic Gold Mineralization DAVID M. LAWRENCE†,1,*, PETER J....JE2 4WJ Abstract Loulo is a world-class orogenic gold mining district in the Birimian terrane of western...shear zone, with gold mineralization largely linked to a transtensional event. The mine camp is divided...divided into two distinct styles of gold deposit on the basis of differing geologic characteristics. One group...tourmalinization (pre-, syn- and postmineralization). Gold lodes are Fe-rich (dominated by nickeloan pyrite) |
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