 | | 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 |  | | Journal (article/letter/editorial) | | DEPOSITA 9 Springer-Verlag 1994 Gold mineralization in As-rich mesothermal gold ores of the Bogosu-Prestea...mining district of the Ashanti Gold Belt, Ghana: remobilization of "invisible" gold A.H. Mumin 1, M.E. Fleet...district of southwestern Ghana is a 33 km section of the Early Proterozoic Ashanti Gold Belt. Greenschist facies...and mafic dikes host numerous economic mesothermal gold deposits. Structurally higher ores in the Bogosu...dikes. Most gold occurs as micrometre-size particles in arsenian pyrite, and as "invisible" gold in arsenian |  | 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) | | 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) | | 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 %) |  | | 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...arsenopyrite commonly occur in small amounts, but gold mostly occurs in contact with tetrahedrite, chalcopyrite |  | Pigois, Jon-Philippe, Groves, David I., Fletcher, Ian R., McNaughton, Neal J., Snee, Lawrence W. (2003) Age constraints on Tarkwaian palaeoplacer and lode-gold formation in the Tarkwa-Damang district, SW Ghana. Mineralium Deposita, 38 (6) 695-714 doi:10.1007/s00126-003-0360-5 | Journal (article/letter/editorial) | | Tarkwaian palaeoplacer and lode-gold formation in the Tarkwa-Damang district, SW Ghana Received: 17 June 2002...epigenetic gold-forming events are recorded in the world-class gold province of southwest Ghana. A pre-Tarkwaian...Prestea) to giant (e.g. Obuasi) orogenic gold deposits which have made the region famous for more than 2...against derivation of the palaeoplacer gold from an orogenic gold source related to the compressional phase... Instead, they suggest that the gold source was either orogenic gold lodes related to an earlier compressional |  | | Journal (article/letter/editorial) | | inclusions in quartz-pebbles of the gold-bearing Tarkwaian conglomerates of Ghana as guides to their provenance...Proterozoic Aubearing Tarkwaian conglomerates in Ghana reveal several original (inherited) pre-sedimentary...inclusions in quartz-vein type gold deposits of the Birimian Supergroup in Ghana and Burkina Faso. This type...inclusions has not been reported from any other lode-gold deposit of greenstone affiliation and is thus a...a specific characteristic for Birimian-hosted gold deposits. Therefore, it can be used as an unequivocal |  | 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 |  | 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°30âČN and 01°25âČW 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 |  | 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 |  | Milïżœsi, 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 |  | | Journal (article/letter/editorial) | | Mexico and auriferous arsenopyrite from the Ashanti Au mine in Ghana are investigated. Sphalerite from Tres...inclusions or exsolutions. In arsenopyrite from the Ashanti mine, Au occurs as oriented sub-microscopic discrete...at larger scale. The formation of nanometre-sized gold particles in arsenopyrite is interpreted as enrichment...and subsequent crystallisation of nanometre-sized gold grains at the surface of arsenopyrite after the...solid solution; sphalerite; germanium; arsenopyrite; gold. 1. Introduction Trace elements in ore minerals |  | | 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...boulangerite and jamesonite. The occurrence of the gold is intimately associated with arsenopyrite and the...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 |  | | 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 |  | Masurel, Quentin, ThĂ©baud, Nicolas, Miller, John, Ulrich, Stanislav, Hein, Kim A.A., Cameron, Greg, BĂ©ziat, 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) | | 23â47 Sadiola Hill: A World-Class Carbonate-Hosted Gold Deposit in Mali, West Africa* Quentin Masurel,1...Perry Avenue, Kensington, WA 6152, Australia Ashanti Australia Limited, Asset Development - Brownfields...Montpellier, France Abstract The ~8-Moz Sadiola Hill gold deposit is located in the KĂ©dougou-KĂ©nieba inlier...the abundance of carbonate rocks. The Sadiola Hill gold deposit occurs within 3 km of the Senegal-Mali shear...shear zone, and country rocks in the region have undergone polycyclic deformation. The lithostratigraphy |  | | Journal (article/letter/editorial) | | Gold mineralisation in the essakane goldfield in Burkina Faso, west African craton Asinne...article as: Tshibubudze, Asinne, Hein, Kim A.A., Gold mineralisation in the essakane goldïŹeld in Burkina...apply to the journal pertain. ACCEPTED MANUSCRIPT Gold mineralisation in the Essakane goldfield in Burkina...known for its structurally hosted Au deposits in Ghana, Burkina Faso, CĂŽte dâIvoire, Mali and Niger. The...Burkina Faso has produced D 1 606 000 ounces of gold since 2010 from the Essakane Main Zone. The Essakane |  | | Journal (article/letter/editorial) | | and Gangue Quartz at the Degdekan and Golâtsovsky Gold Deposits, Magadan Oblast S. V. Voroshina, E. E....and Golâtsovsky goldâquartz deposits are located in the southeastern YanaâKolyma gold belt. The orebodies...INTRODUCTION Since the discovery of the YanaâKolyma gold belt in the 1930s, relationships between intrusive...sequence of geological events and the genesis of goldâquartz deposits. Special attention has been paid...bodies. Bilibin (1940) suggested an older age of the gold-bearing quartz veins relative to granitoids on the |  | Mishra, T., Jose, B., Deepa, K. K., Sreehari, S. M. S., Venkatesh, A. S. (2001) Auriferous mineralization in the Sakoli Group, central India, with particular reference to sulphide-bound gold. Applied Earth Science, 110 (2) 103-109 doi:10.1179/aes.2001.110.2.103 | Journal (article/letter/editorial) | | India, with particular reference to sulphide-bound gold Downloaded by [University of Sussex Library] at...S. M. S. Sreehari and A. S. Venkatesh Synopsis Gold mineralization in the PularâParsoriâThutanbori belt...submicroscopic or invisible forms of latticebound gold occur. The free gold is found within the shear zone, as either...within sulphides. Major opaque minerals in this gold-bearing belt include arsenopyrite, pyrrhotite, pyrite...sulphides reveal the presence of sulphide-bound gold within the beltâthe first time such occurrences |  | | Journal (article/letter/editorial) | | 2002 Refractory gold ores in Archaean greenstones, Western Australia: mineralogy, gold paragenesis, metallurgical...6845, Western Australia ABSTR ACT Mesothermal gold ores in the Archaean Yilgarn Craton of Western Australia...submicroscopic gold (60 270 ppm), but does not contain inclusions of particulate gold. Arsenopyrite in...submicroscopic gold, but contains inclusions and fracture fillings of particulate gold. In some refractory...contains moderately high levels of submicroscopic gold (20 40 ppm), the concentration of which is directly |  | | Journal (article/letter/editorial) | | 72(4), pp. 953â970 Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva...Accepted 15 October 2008] ABSTR ACT Gold mineralization at the Viceroy Mine is hosted in extensional veins...metabasalts of the Archaean Arcturus Formation. The gold mineralization is generally made up of banded or...(Bi6Te2S), bismuthinite (Bi2S3), native Bi, native gold, maldonite (Au2Bi), and jonassonite (AuBi5S4). The...342ÂșC, in the normal range of mesothermal, orogenic gold deposits worldwide. However, melting temperatures |  | Cabri, L. J., Newville, M., Gordon, R. A., Crozier, E. D., Sutton, S. R., McMahon, G., Jiang, D.-T. (2000) CHEMICAL SPECIATION OF GOLD IN ARSENOPYRITE. The Canadian Mineralogist, 38 (5) 1265-1281 doi:10.2113/gscanmin.38.5.1265 | Journal (article/letter/editorial) | | 38, pp. 1265-1281 (2000) CHEMICAL SPECIATION OF GOLD IN ARSENOPYRITE LOUIS J. CABRI§ Canada Centre for...ABSTRACT The speciation of Au in gold-bearing arsenopyrite (FeAsS) from four gold deposits (Olympiada, Sentachan...mass spectrometry analyses and images. âInvisibleâ gold in arsenopyrite occurs in two apparently mutually...Bento and Sheba deposits contains chemically bound gold. With comparable constituent electronegativities...being covalent rather than ionic. The invisible gold in arsenopyrite from the Olympiada deposit, on the |  | | Journal (article/letter/editorial) | | conjunction of factors that lead to formation of giant gold provinces and deposits in non-arc settings David...conjunction of factors that lead to formation of giant gold provinces and deposits in non-arc settings, Geoscience...conjunction of factors that lead to formation of giant 3 gold provinces and deposits in non-arc settings 4 David...of giant gold deposits in non-arc environments. For giant 21 orogenic, intrusion-related gold systems...systems (IRGS) and Carlin-type gold deposits and iron oxide- 22 copper-gold (IOCG) deposits, there are common |  | | Journal (article/letter/editorial) | | and fluid evolution of orogenic gold mineralisation at the Betam mine, south Eastern Desert, Egypt Basem...2007 # Springer-Verlag 2007 Abstract The Betam gold deposit, located in the southern Eastern Desert...subordinate galena, chalcopyrite, pyrrhotite and gold. Gold occurs in the quartz veins and adjacent wallrocks...around rhythmic goethite. Presence of refractory gold in arsenopyrite and pyrite is inferred from microprobe...arsenopyrite (30.4â30.7 wt.% As) associated with gold inclusions indicates a temperature range of 325â344°C |  | | Journal (article/letter/editorial) | | Platinum-group minerals and gold in arsenic-rich ore at the Thompson mine, Thompson Nickel Belt, Manitoba...FLEET, M.E. (1975b): Structural chemistry of marcasite and pyrite type phases. Z. Kristallogr. 142, 332-346... M.E. (1998a): Detrital pyrite in Witwatersrand gold reefs: X-ray diffraction evidence and implications...R. & WEISENER, C.G. (1993): Arsenian pyrite from gold deposits: Au and As distribution investigated by...partitioning of platinum-group elements (PGE) and gold with application to magmatic sulfideâPGE deposits |
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