 | 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...Australia 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...of deformation at Obuasi. The D2Ob is the main deformation stage affecting the Obuasi district and corresponds |  | 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...million ounce (Moz) Ashanti deposit at Obuasi and other multimillion ounce deposits at Bogoso, Konongo...Konongo, Prestea, Bibiani, and in the Yamfo-Sefwi region. Gold deposits of the Chirano district are localized...intrusions. Weaker alteration and subparts per million gold grades extend into adjacent Birimian mafic igneous |  | 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...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...east-trending folds. Approximately 75 percent of the gold extracted from the Bogoso district has been mined |  | 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...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) | | 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 |  | 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...ANDJOEA. AMANOR AshantiGoldfields Company Ltd., Obuasi,Ghana Abstract The Ashantibeltof Ghanaisthekeydistrictof...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 ...wasreinterpreted by LeubeandHirdes the interrelationships mine,goldmineralization ishosted in tightly (1986)and |  | | 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 |  | | 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...the gaseous 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 |  | | Journal (article/letter/editorial) | | Telluride mineralization at Ashanti gold mine, Ghana R. J. BOWELL, R. P. FOSTER Department of Geology...Road, London SW7 5BD Abstract Gold mineralization at the Ashanti Mine occurs in shear zones which are...zone. However, gold-rich telluride mineralization in veins in the hangingwall of the Obuasi ore zone at...at Ashanti appears to have post-dated development of the major gold-bearing shear zone. Complex assemblages...high fo2 and high fT~2/f%. Replacement of earlier gold-sulphide mineralization is indicated. The fluids |  | | 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) | | ROBB 255 Gold mineralization in Palaeoproterozoic granitoids at Obuasi, Ashanti region, Ghana: Ore geology...South Africa. ABSTRACT Granitoid-hosted gold deposits at Obuasi are located along the eastern margin of...of the Kumasi basin, about 5 km west of the Ashanti goldfields, and comprise the auriferous Nhyiaso, Ayankyerim...These deposits represent a relatively new style of gold mineralization in the Ghanaian Birimian. The mineralization...sulphides (mainly pyrite, arsenopyrite) and carbonates. Gold is closely associated with the sulphides in both |  | Dai, Xiongxin, Boamah, Daniel, Koeberl, Christian, Reimold, Wolf Uwe, Irvine, Gordon, McDonald, Iain (2005) Bosumtwi impact structure, Ghana: Geochemistry of impactites and target rocks, and search for a meteoritic component. Meteoritics & Planetary Science, 40 (9) 1493-1511 doi:10.1111/j.1945-5100.2005.tb00414.x | Journal (article/letter/editorial) | | http://meteoritics.org Bosumtwi impact structure, Ghana: Geochemistry of impactites and target rocks, and...and environs of the Bosumtwi impact structure, Ghana, have been investigated for the possible presence...related to regional gold mineralization, although mineralized samples from the general region show somewhat...centered at 06°30′N and 01°25′W Bosumtwi crater in Ghana is a wellpreserved, complex impact structure. It...Geographic location of the Bosumtwi impact crater, Ghana, in relation to the Ivory Coast tektite strewn field |  | Tourigny, Ghislain, Tranos, Markos D., Masurel, Quentin, Kreuzer, Oliver, Brammer, Steffen, Owusu-Ansah, Kwaku, Yao, David, Hayford, Thomas (2019) Structural controls on granitoid-hosted gold mineralization and paleostress history of the Edikan gold deposits, Kumasi Basin, southwestern Ghana. Mineralium Deposita, 54 (7) 1033-1052 doi:10.1007/s00126-018-0858-5 | Journal (article/letter/editorial) | | on granitoid-hosted gold mineralization and paleostress history of the Edikan gold deposits, Kumasi Basin...Basin, southwestern Ghana 2 Ghislain Tourigny 1 & Markos D. Tranos & Quentin Masurel 3 & Oliver Kreuzer...> 9 Moz total aggregate gold endowment at the Edikan mine, Kumasi Basin, Ghana, is contained within a...a cluster of orogenic gold deposits located along the Akropong fault zone. The granitoid-hosted orebodies...Esuajah), essentially an interconnected mesh of gold-bearing quartz veins, formed during deformation |  | | Journal (article/letter/editorial) | | auriferous fluids in African Archean and Proterozoic gold deposits? Constraints from stable carbon isotopic...fluid inclusions in quartz from selected gold deposits in Ghana and Zimbabwe have been analyzed using a...inclusions from Archean and Paleoproterozoic orogenic gold deposits and points to diverse sources of CO2 in...generalized for other Archean and Proterozoic orogenic gold deposits worldwide remains open. However, a significant...Rohstoffe, Stilleweg 2, 30655 Hannover, Germany (Ghana) differ considerably from the δ13CCO2 values of |  | | Journal (article/letter/editorial) | | geochemistry of tropical rain forest soils: Ashanti, Ghana R.J. Bowell" The Department of Geology, The...underlying saprolite has been made in ,he Ashanti area of southwest Ghana. The soils in the area are kaolinite-muscovite...Introduction The Ashanti area is 160 km northwest of Acera, in southwest Ghana (Fig. I ). Active gold mining has...timber production are the main land uses of the Ashanti region with extensive areas of primary rain forest...association) still preserved (Survey of Ghana, 1969 ). The Ashanti area is characterized by heavily forested |  | 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...reserved. 1. Introduction Many mesozonal orogenic gold deposits in metasediments (Groves et al., 2003;...several types of carbonaceous material associated with gold: (1) in fault-fill veins associated with B. Kříbek |  | | 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 |  | 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 |  | Agangi, Andrea, Reddy, Steven M., Plavsa, Diana, Fougerouse, Denis, Clark, Chris, Roberts, Malcolm, Johnson, Tim E. (2019) Antimony in rutile as a pathfinder for orogenic gold deposits. Ore Geology Reviews, 106. 1-11 doi:10.1016/j.oregeorev.2019.01.018 | Journal (article/letter/editorial) | | Antimony in rutile as a pathfinder for orogenic gold deposits Andrea Agangi, Steven M. Reddy, Diana Plavsa...Antimony in rutile as a pathfinder for orogenic gold deposits, Ore Geology Reviews (2019), doi: https://doi... Antimony in rutile as a pathfinder for orogenic gold deposits Andrea Agangi1,2, Steven M. Reddy1, Diana...Australia aagangi@uj.ac.za Key words: Gold, antimony, orogenic gold deposit, indicator mineral, exploration...applicability of rutile as a pathfinder for orogenic gold deposits, which are an important source of this |  | | Journal (article/letter/editorial) | | in Austria Evolution of gold mineralization in the Ashanti Gold Belt, Ghana: evidence from carbonate...Bogosu and Prestea mining districts of the Ashanti Gold Belt, Ghana. The compositions of coexisting ankerite-siderite...composition of fluids in the Bogosu-Prestea mesothermal gold system. Temperatures derived from the ankerite-siderite...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 |  | Fougerouse, Denis, Micklethwaite, Steven, Tomkins, Andrew G., Mei, Yuan, Kilburn, Matt, Guagliardo, Paul, Fisher, Louise A., Halfpenny, Angela, Gee, Mary, Paterson, David, Howard, Daryl L. (2016) Gold remobilisation and formation of high grade ore shoots driven by dissolution-reprecipitation replacement and Ni substitution into auriferous arsenopyrite. Geochimica et Cosmochimica Acta, 178. 143-159 doi:10.1016/j.gca.2016.01.040 | Journal (article/letter/editorial) | | 178 (2016) 143–159 www.elsevier.com/locate/gca Gold remobilisation and formation of high grade ore shoots...February 2016 Abstract Both gold-rich sulphides and ultra-high grade native gold oreshoots are common but...to have relatively low gold solubilities and are unlikely to generate high gold concentrations. The world-class...world-class Obuasi gold deposit, Ghana, has gold-rich arsenopyrite spatially associated with quartz veins...extremely high, localised concentrations of native gold, contained in microcrack networks within the quartz |  | | 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 to the |  | | Journal (article/letter/editorial) | | role of fulvic acid in the supergene migration of gold in tropical rain forest soils R. J. B~WELL, I**...March 3 I, 1993) Abstract-In tropical terrains, gold is released during lateritic weathering from the...for gold complexing, of which fulvic acid (FA) is the dominant mobile component. At the Ashanti mine...mine, southwest Ghana, a strong correlation between gold and soil organic matter exists. Dissolution studies...potential to complex gold. High-sulphur fulvic acid (4.2%S, 2.7%N, 4 1.l%O) solubilizes more gold than high-nitrogen |  | | 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 Justice mine, in the Ashanti goldfields of southwestern Ghana, chemical weathering of gold-bearing sulfide-rich...geochemical features that are diagnostic. In this type of gold mineralization, the most abundant sulfides are arsenopyrite |  | | 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...formed during regional compression. The Damang region has an extended paragenesis involving numerous...metamorphic, igneous, and metasomatic events. Orogenic gold mineralization occurred late in the geologic paragenesis |
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