| | Journal (article/letter/editorial) | constraints on gold mineralization and Paleoproterozoic crustal evolution in the Ashanti belt of southern...southern Ghana Thomas Oberth~r a,*, Ulrich Vetter a, Donald W. D a v i s b, Joe A. A m a n o r c a Federal...Toronto, Ontario, Canada M5S 2C6 Ashanti Gold~elds Company Ltd, Obuasi, Ghana Received 6 February 1997; received...Abstract U/Pb isotopic dating in the region of the Ashanti belt in Ghana has been carried out to improve understanding...understanding of crustal evolution and gold mineralization in this Paleoproterozoic terrane. A U/Pb zircon | | Salvi, Stefano, VelĂĄsquez, German, Miller, John M., BĂ©ziat, Didier, Siebenaller, Luc, Bourassa, Yan (2016) The Pampe gold deposit (Ghana): Constraints on sulfide evolution during gold mineralization. Ore Geology Reviews, 78. 673-686 doi:10.1016/j.oregeorev.2015.11.006 | Journal (article/letter/editorial) | com/locate/oregeorev The Pampe gold deposit (Ghana): Constraints on sulïŹde evolution during gold mineralization Stefano...November 2015 Keywords: Ghana Orogenic gold Birimian Ashanti West Africa Gold nanoparticles a b s t r...r a c t The Ashanti belt, a world-renowned gold producing region in southwest Ghana, has received renewed...focused on the major deposits situated along the Ashanti shear zone and in the adjacent Tarkwa Basin to...processes that control gold deposition at the regional scale. At Pampe, gold endowment has been estimated | | | 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) | distribution of gold in quartz veins and sulfide ores of the Ashanti mine and other deposits in the Ashanti belt...belt of Ghana: genetic implications Received: 28 September 1995 / Accepted: 11 June 1996 Abstract The Ashanti...belt of Ghana constitutes a gold province which has produced a total of about 1500 t of gold historically...historically. Gold mineralization is found in steep, NNE-SSW to NE-SW trending shear zones predominantly transecting...Ma), and in recent placers. The distribution of gold, its chemistry, paragenesis and mineralogical siting | | 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 | | 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 | | Salvi, S., SangarĂ©, A., Driouch, Y., Siebenaller, L., BĂ©ziat, 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) | elsevier.com/locate/oregeorev The Kalana vein-hosted gold deposit, southern Mali S. Salvi a,â, A. SangarĂ©...Al Qods Hippodrome, BP 2699 Bamako, Mali d Avnel Gold Mining Limited, 39 Cheval Place, London SW7 1EW...veins Arsenopyrite Gold Late-orogenic Late-tectonic a b s t r a c t The Kalana gold deposit occurs within...gently dipping thrust faulting. Two episodes of gold precipitation are recognized: a ïŹrst episode, during...stages of vein growth, formed micron-size native gold inclusions in arsenopyrite; a later episode, during | | | Journal (article/letter/editorial) | Characteristics of Granitoid-Hosted Gold Deposits in the Birimian Terrane of Ghana: A Fluid Inclusion Microthermometric...granitoid-hosted gold deposits and prospects in the Birimian terrane of Ghana, as well as from the Sansu mine (Ashanti...microspectrometry. Fluid inclusions from the granitoid-hosted gold deposits are dominated by aqueous H2O-CO2-NaCl type...kbars for the gold deposits. By contrast, fluid inclusions in the Sansu mine at Ashanti mostly comprise...inclusions from both granitoid- and shear zone-hosted gold deposits are mainly composed of CO2 (80â95 mol %) | | Le Mignot, Elodie, Reisberg, Laurie, AndrĂ©-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) | Geochronological Evidence for Multiple Paleoproterozoic Gold Events at the Scale of the West African Craton Elodie...Archean-Proterozoic craton of West Africa hosts numerous gold deposits, which are spatially and temporally related...multiple deformation events. The majority of these gold deposits are located along shear zones. The structural...history is relatively well established for most gold deposits, but absolute timing of the mineralization...of gold events: Nassara and Kiaka in Burkina Faso and Wassa, Damang, and Obuasi in southern Ghana. Gold | | Perrouty, StĂ©phane, AillĂšres, 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 ïŹeld 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) | 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 | | 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 | | Fougerouse, Denis, Micklethwaite, Steven, Ulrich, Stanislav, Miller, John, Godel, BĂ©linda, Adams, David T., McCuaig, T. Campbell (2017) Evidence for Two Stages of Mineralization in West Africaâs 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 Africaâs Largest Gold Deposit: Obuasi, Ghana Denis Fougerouse,1,â 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 | | | 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 | | | Journal (article/letter/editorial) | West Africa: The Worldâs Premier Paleoproterozoic Gold Province* Richard J. Goldfarb,1, 2,â Anne-Sylvie...approximate 10,000-metric ton (t) gold endowment, is one of the worldâs 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 | | 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) | Mineralogy and Mineral Chemistry of the Ashanti Gold Deposit at Obuasi, Ghana Shiloh OSAE*, Katsuo KASE** and...Abstract: The gold deposit at Ashanti occurs in the Proterozoic Birimian formation of Ghana. Two main ore...types mined from the deposit are gold-bearing quartz veins, and gold-sulfide disseminations in metasediments...metavolcanics. The main sulfide minerals in the gold-sulfide disseminated ores are arsenopyrite, pyrite...small amounts, but gold mostly occurs in contact with tetrahedrite, chalcopyrite, galena, aurostibite, and | | Ouiya, Pascal, Siebenaller, Luc, Salvi, Stefano, BĂ©ziat, Didier, Naba, SĂ©ta, Baratoux, Lenka, NarĂ©, 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) | homepage: www.elsevier.com/locate/oregeorev The Nassara gold prospect, Gaoua District, southwestern Burkina Faso...Craton Boromo Greenstone Belt Burkina Faso Orogenic gold Shear zone a b s t r a c t The Nassara-Au prospect...at the southern termination of the Boromo Belt. Gold is associated with pyrite and other Fe-bearing minerals...As-rich growth zones, the latter containing gold inclusions. Gold mineralization formed during D2NA. Subsequent...related are devoid of gold. Nassara is a classical orogenic gold occurrence where gold is associated to disseminated | | | 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 â JB MinQuest, ParkvĂ€gen...December 2010 Keywords: Turbidite-hosted gold deposits Graphiteâgold association InterïŹow (chemical) sediments...ïŹuids 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 âturbidite-hostedâ. Hence | | | Journal (article/letter/editorial) | Characteristics of ore minerals associated with gold at the Prestea mine, Ghana NAPOLEONQ. HAMMOND Geological Institute... Japan Abstract Gold in Early Proterozoic Birimian greenstone at Prestea in Ghana is associated with...pyrrhotite, galena, tetrahedrite, bournonite, boulangerite and jamesonite. The occurrence of the gold is intimately...the major component of sulphosalts associated with gold and occurring in two distinct types. Type I show...As)4S13. The tetrahedrites co-precipitated with gold exhibit ideal characteristics indicating an equilibruim | | 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) 143â159 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 | | | Book | Ver' "\ ~~ âą 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) | 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) | 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 | | 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 |
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