 | 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...pre-Tarkwaian event was the source of the world-class Tarkwa palaeoplacers whereas post-Birimian and Tarkwaian...world-class (e.g. Prestea) to giant (e.g. Obuasi) orogenic gold deposits which have made the region famous for more...clastic rocks from Damang and Bippo Bin, northeast of Tarkwa. The overall data distribution broadly overlaps |  | | 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 |  | | 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...hydrothermal alteration, locally termed ”pink hematite” alteration, associated with the intrusion of |  | | Journal (article/letter/editorial) | | and provenance of Birimian and gold-bearing Tarkwaian sediments in Ghana, West Africa D . W . D a v i s...Strasbourg, France dTGL, State Gold Mining Corporation, Accra, Ghana Received November 16, 1992; revised...Eburnean rocks of Ghana. Gold-bearing and barren Tarkwaian conglomerates in the Tarkwa basin, and a volcanogenic...synvolcanic granitoid plutons in the Sefwi and Ashanti belts, which flank the Kumasi basin. This suggests...are typical of the region. Significant epigenetic gold mineralization probably began in the short time |  | 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 |  | 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...Sefwi Group, the Kumasi Group (Birimian) and the Tarkwa Group (Tarkwaian) that were intruded by abundant...manifested as regional scale folding in the southern Ashanti Belt. D1 synorogenic granitoids were intruded between |  | | 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) | | formed 26 between ca. 2.5 - 2.3 Ga, nearly all gold, porphyry copper, lead-zinc and sedimentary 27...distinguished by major Precambrian 30 IOCG’s, copper-gold that formed at ca. 2.1 Ga and approx. 680 Ma, and... Mineral Deposit Database highlight that gold and non-gold commodities formed in multiple 37 phases...of iron 38 ore, nickel sulphides, diamonds and gold in the earth’s crust. The pre-Eburnean or Tangaean-...EoEburnean-Eburnean I Event yielded gold, and the major Eburnean Orogeny yielded gold, 40 iron ore, manganese |  | | Journal (article/letter/editorial) | | The West African Craton hosts major resources of gold, iron ore, aluminium ore, diamonds, phosphates and...ore and gold in the Kénéma–Man and Reguibat Shields during the Neo-Archean. The majority of gold, porphyry...same time diamond-bearing kimberlites developed in Ghana. Another distinct diamond event has been recognized...Isolated occurrences of IOCG's as well as copper–gold and gold formed in Pan-African/Variscan belts. During...become a focus for exploration and development of gold, iron ore, diamonds, aluminium ore, phosphate, and |  | 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) | | 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 |  | Salvi, Stefano, Velásquez, German, Miller, John M., Béziat, 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 sulfide 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...deposits situated along the Ashanti shear zone and in the adjacent Tarkwa Basin to the east, neglecting...processes that control gold deposition at the regional scale. At Pampe, gold endowment has been estimated |  | | Journal (article/letter/editorial) | | geology, metallogenesis and prospectivity of several gold deposits from the Archaean and Palaeoproterozoic...portfolio of the West African craton and contextualize gold, iron-oxide coppergold, iron ore, aluminium, diamond...Markwitz et al., 2015). Unfortunately many of the non-gold mineral occurrences/deposits, their exploration...Milési et al., 1989; Béziat et al., 2008 on regional gold metallogenesis; Nyame et al., 2002; Beauvais et...that the majority of contributions present data for gold deposits (Neoarchean to Paleoproterozoic). However |  | Lebrun, Erwann, Thébaud, Nicolas, Miller, John, Ulrich, Stanislav, Bourget, Julien, Terblanche, Ockert (2016) Geochronology and lithostratigraphy of the Siguiri district: Implications for gold mineralisation in the Siguiri Basin (Guinea, West Africa) Precambrian Research, 274. 136-160 doi:10.1016/j.precamres.2015.10.011 | Journal (article/letter/editorial) | | lithostratigraphy of the Siguiri district: Implications for gold mineralisation in the Siguiri Basin (Guinea, West...Highway, Crawley, WA 6009, Australia b AngloGold Ashanti Ltd – Brownfields Exploration Technical Hub – Continental...Geochronology Lithostratigraphy Early architecture Gold a b s t r a c t Geochronology and lithostratigraphic...the location of the world class Siguiri orogenic gold district. Three metasedimentary formations occur...that the Kintinian Formation is part of the Lower Tarkwa Group, best described as “late orogenic basin” |  | | 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 |  | 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...contents are high and possibly related to regional gold mineralization, although mineralized samples from...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 |  | Lebrun, Erwann, Thébaud, Nicolas, Miller, John, Roberts, Malcolm, Evans, Noreen (2017) Mineralisation footprints and regional timing of the world-class Siguiri orogenic gold district (Guinea, West Africa) Mineralium Deposita, 52 (4) 539-564 doi:10.1007/s00126-016-0684-6 | Journal (article/letter/editorial) | | regional timing of the world-class Siguiri orogenic gold district (Guinea, West Africa) Erwann Lebrun 1 Noreen...world-class orogenic gold district hosted in the weakly metamorphosed Upper Birimian to Lower Tarkwa Group sedimentary...Perth, WA 6845, Australia vein set contains high gold contents of up to 43.3 ppm, in substitution in pyrite...pyrite crystal lattice, representing a minor first gold mineralisation event. The third and most prominently...late D3S and represents the second and principal gold mineralisation event. This mineralisation event |  | | Journal (article/letter/editorial) | | andauriferousquartz-pebble conglomerates, gold-bearingconglomerates of the Tarkwaianin Ghana,and red-bedsediments,yield...to haveactivelycontrolled(buff- theTarkwaianin Ghana,havepreviously beenrecog- ered)environmental conditions...onglomerates, and continentalred-bedsediments. Gold- and Uranium-bearing, Pyritic Quartz-PebbleConglomerates...goldplacersdevelopedon fluvialfansor fan deltas, Pyritic gold- and/oruranium-bearing quartz-peb- mainlyalongthe...grainsare characterizedby and ates(Barberton greenstone belt) ca.3.'25Ga (Saager, roundedshapes,abradedsurfacemorphologies |  | | 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...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...Ma), and in recent placers. The distribution of gold, its chemistry, paragenesis and mineralogical siting |  | Ndur, Samuel Agyarko, Nyarko, Samuel Yeboah, Quaicoe, Ishmael, Osei, Linda B. (2020) Heavy Metal Loading in Surface Sediments Along the Kawere Stream, Tarkwa, Ghana. Ghana Mining Journal, 20 (2). 77-85 | Journal (article/letter/editorial) | | Surface Sediments along the Kawere Stream, Tarkwa, Ghana* 1 1 S. A. Ndur, 2S. Y. Nyarko, 1I. Quaicoe...B. Osei University of Mines and Technology, Tarkwa, Ghana 2 Cranfield University, UK Ndur, S. A., Nyarko...Surface Sediments along the Kawere Stream, Tarkwa, Ghana”, Ghana Mining Journal, Vol. 20, No. 2, pp. 77-85...ecosystems (reservoirs, lagoons, streams and rivers) in Ghana is on the rise prompting urgent attention to avert...located at Tarkwa, a mining town in the Western Region of Ghana. Tarkwa is the capital of the Tarkwa Nsuaem |  | | Journal (article/letter/editorial) | | verbunden. Geb~inderte Eisenerzformationen, Mangan und Gold (Gang-Typ) befinden sich in den Lagerst~tten mafisch...und Orogen-Giirtel. Sediment~i~e Lagerst~tten yon Gold und Diamanten sind eng mit Molasse-Fazies der Sedimente...formations, manganese and vein-type gold deposits. Sedimentary deposits of gold and diamonds are closely associated...principal source of diamonds, mangenese, iron ores and gold. The primary purpose of this paper is to examine...RAND, 1978). The Kasila Group which extends along a belt from Liberia through Sierra Leone into Guinea consists |  | Milesi, J.P, Ledru, P, Marcoux, E, Mougeot, R, Johan, V, Lerouge, C, Sabaté, P, Bailly, L, Respaut, J.P, Skipwith, P (2002) The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a “hydrothermal shear-reservoir” model. Ore Geology Reviews, 19 (1) 95-136 doi:10.1016/s0169-1368(01)00038-5 | Journal (article/letter/editorial) | | com/locate/oregeorev The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a ‘‘hydrothermal...widespread alteration with gold-bearing quartz lodes, conglomerates showing a sulphide – gold – Cr – mineral association... Such a model, which implies the existence of a gold preconcentration within the quartz – pebble conglomerates...magnetite and responsible for the high concentration of gold within shear veins containing assemblages of Cr...of the Paleoproterozoic, the sulphidation of the gold-bearing conglomerates would depend largely on the |  | | 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...components of a major transcrustal shear zone. However, gold-rich telluride mineralization in veins in the hangingwall...Obuasi ore zone at Ashanti appears to have post-dated development of the major gold-bearing shear zone...high fo2 and high fT~2/f%. Replacement of earlier gold-sulphide mineralization is indicated. The fluids |  | | Journal (issue) | | as agate - rosequartz - greenquartz smokyquartz-hematite, rutilquartz-jaspis-orangecalcite -amethyst etc...BRAZILIAN MINERALS WHOLESALE ONLY. MODERN SETTINGS IN GOLD AND SILVER AT TRADE PRICES the handmade jewellery...Carson Ritchie 28 32 Gems & Minerals Traditional Gold Industries in West Africa by David Baldry, D.Sc...O'Donoghue. 5 TRADITIONAL GOLD INDUSTRIES IN WEST AFRICA Part I. Gold deposits and their historical...African gold the thoughts of one's audience invariably turn to the Witwatersrand field, where gold was discovered |  | | Journal (article/letter/editorial) | | chalcopyrite, galena, molybdenite, sphalerite, hematite, zircon and magnetite. On the erosional surface...rutile, garnet, sphene, apatite, tourmaline, . hematite, pyrite, chalcopyrite, cubanite, mackinawite-valletyite...widely in composition of cement Maximum content of gold' . Up to 1 - 553 g/ton No more than 0.06 ,...Archean granites Staryy Oslcol area Tarkwa gold field (Ghana) after A. I. Bezgubov, 1963 Lower Proterozoicof...Proterozoicof Lower Proterozoic of Tarkwa system Kursk series Archean granites, migma- Gneisses, schists |  | Teixeira, João Batista Guimarães, de Souza, Jorge André Braz, da Silva, Maria da Glória, Leite, Carlson Matos Maia, Barbosa, Johildo Salomão Figueiredo, Coelho, Carlos Eduardo Silva, Abram, Maisa Bastos, Filho, Valter Mônaco Conceição, Iyer, Sundaram S.S. (2001) Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis. Mineralium Deposita, 36 (3) 332-344 doi:10.1007/s001260100174 | Journal (article/letter/editorial) | | MoÃnaco ConceicËaÄo Filho á Sundaram S.S. Iyer Gold mineralization in the Serra de Jacobina region,...Abstract Gold deposits in the Serra de Jacobina region in Bahia, northeastern Brazil, occur in a belt of siliciclastic...ed hydrothermal orebodies, and the formation of gold occurrences also in quartzites and ma®c and ultrama®c...an epigenetic model for the mineralizing event. Gold mineralization is interpreted to be an integral...craton along a main orogenic belt termed the Salvador±CuracËa mobile belt (Marinho and Sabate 1982; Cordani |
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