 | | Journal (article/letter/editorial) | | Birimianperiod.The selecteddeposits, which includethe Loulo, Poura,andBanoragolddeposits,the Fal(•m(•iron deposit,and...eybesseet eraton are found in Guinea, Mall, Burkina Faso, al., 1989, 1990). The D• and Da eventsmostlycon(Ledruet...d'Ivoire) and Di(•nf•m(•ra (Burkina Rocks in West Africa and Guiana Faso)eraplaced in volcano-sedimentary...bearingconglomeratederived from a reworkingof marked in Burkina Faso and Niger (Ouedraogo, older B1 and B2 mineralization...Ma; Rb/Sr (5); BroboLeucogranite Ghana, north Burkina Faso 2086 _+40 Ma; Rb/Sr (6); upper west (pre- to |  | Le Mignot, Elodie, Siebenaller, Luc, Béziat, Didier, André-Mayer, Anne-Sylvie, Reisberg, Laurie, Salvi, Stefano, Velasquez, Germán, Zimmermann, Catherine, Naré, Athanase, Franceschi, Guy (2017) The Paleoproterozoic Copper-Gold Deposits of the Gaoua District, Burkina Faso: Superposition of Orogenic Gold on a Porphyry Copper Occurrence?. Economic Geology, 112 (1) 99-122 doi:10.2113/econgeo.112.1.99 | Journal (article/letter/editorial) | | Copper-Gold Deposits of the Gaoua District, Burkina Faso: Superposition of Orogenic Gold on a Porphyry...the Boromo-Goren greenstone belt in southern Burkina Faso, is a rare case where economic copper and gold...in Sénégal) or Mn deposits (e.g., Tambao in Burkina Faso); (2) synorogenic deposits, which are represented...recognized two main styles of gold mineralization in Burkina Faso. The first type is characterized by gold associated... 2017), and Inata (McCuaig et al., 2016) in Burkina Faso; and Morila (McFarlane et al., 2011) and Loulo |  | | Journal (article/letter/editorial) | | 2033-2044 Gold in Birrimian Greenstone Belts of Burkina Faso, West Africa DANIEL HUOT,* VLADIMIR SA•rRAN...AND PAUL ZIDA BureaudesMineset de la Gdologiedu Burkina,B. P. 601, Ouagadougou, BurkinaFaso Abstract The...occurrenceof gold in the greenstonebelts of Burkina Faso and then presentthe resultsof their investigations...generalstratigraphic main greenstonebelts of Burkina Faso;the Boromo featuresof Archeanbelts, as describedby...(north of Poura) containsignificantlymore ultramafic rocks than are found in the other Burkina belts,suggesting |  | | Journal (article/letter/editorial) | | 2003, pp. 1463–1485 The Perkoa Zinc Deposit, Burkina Faso M. O. SCHWARTZ† AND F. MELCHER Bundesanstalt...Abstract The massive sulfide deposit at Perkoa in Burkina Faso is the only one of its kind in the Paleoproterozoic...andradite-rich garnet, ilmenite, rutile, titanite, and galena are subordinate. Chalcopyrite, arsenopyrite, Ag-rich...THE PERKOA zinc deposit is located in western Burkina Faso (12°22'N, 2°36'W; Fig. 1). It was discovered...(UNDP) and the Bureau des Mines et de la Géologie du Burkina (BUMIGEB). Various drilling programs have been |  | | Journal (article/letter/editorial) | | located mostly in Archean shields (Canada: Sigma mine (Robert and Brown 1986); Lamaque (Daigneault et..."auriferous quartz veins" of Poura in the Birimian shield of Burkina-Faso, and of Le Bourneix and Lauri6ras...rutile crystals up to 1 cm in size (e.g. Poura, Burkina-Faso; Le Bourneix and Lauri6ras, Haute-Vienne...Pyrite Sphalerite Chalcopyrite Galena I Jamesonite Late stage Episode 5 Galena II Tetrahedrite Electrum Boulangerite...Freibergite Pyrargyrite Polybasite Argentite La Belli6re Poura Les Biards Le Chfitelet Villeranges Viges Obuasi |  | Bourges, F., Debat, P., Tollon, F., Munoz, M., Ingles, J. (1998) The geology of the Taparko gold deposit, Birimian greenstone belt, Burkina Faso, West Africa. Mineralium Deposita, 33 (6) 591-605 doi:10.1007/s001260050175 | Journal (article/letter/editorial) | | Taparko gold deposit, Birimian greenstone belt, Burkina Faso, West Africa Received: 9 July 1997 / Accepted:...Proterozoic Birimian BouroumYalogo greenstone belt (Burkina Faso) consists of a network of quartz veins developed...Birimian á Shear zone á Gold á Quartz veins á Burkina Faso á West Africa Introduction The Early Proterozoic...al. 1995) which are particularly abundant in Burkina Faso. Stratigraphic relationships between the two...of the Ivory Coast, DieÂneÂmeÂra district in Burkina Faso); (c) Tarkwaian gold-bearing conglomerate (type |  | | Journal (article/letter/editorial) | | 62 developed in Mali, Mauritania, Senegal, Burkina Faso, Ghana and Cote d’Ivoire. 63 The focus of...described from studies in Ghana and Page 5 of 87 Burkina Faso by Attoh (1982), Eisenlohr (1989), Feybesse...2006), and 2181 172 - 2117 Ma in northeast Burkina Faso (Tapsoba et al., 2013; Tshibubudze et al., this...000 km2 extending from Ghana, 229 Togo, and Burkina Faso to Niger. It is positioned near the south-eastern...presence of the volcanic rocks in 247 the Dakar region indicates that magmatic activity, with concomitant |  | 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) | | timing of gold events: Nassara and Kiaka in Burkina Faso and Wassa, Damang, and Obuasi in southern Ghana...production of Ghana, which was the main gold-producing region in Africa before the discovery of the Witwatersrand...Kiaka Poura HO BO Fig.4A Gaoua BA SF 10°N Ouagadougou Wona-Kona Morila Kalana GO BURKINA FASO...Tarkwaian-type sediments in other regions, e.g., Burkina Faso (Baratoux et al., 2011). These Tarkwa units...(Boromo-Goren belt, Burkina Faso), Kiaka (Tenkodogo/Fada N’Gourma belt, Burkina Faso), and Obuasi, Damang |  | | Journal (article/letter/editorial) | | Mumin 1, M.E. Fleet 1, and S.L. Chryssoulis 2 Department of Earth Sciences, University of Western Ontario...Africa, including parts of Cote D'Ivoire, Ghana, Burkina Faso, Guinea, Liberia, Mali and Senegal. In 446...concession, immediately to the southwest. This region, with more than 230 tonnes of gold produced, is...the principal conduit for fluids generated in the region. Gold mineralization is interpreted to have formed...respectively) of the Prestea Goldfields Limited mine. At Bogosu, samples of diamond drill core were taken |  | | Journal (article/letter/editorial) | | d'Europe. Les ages ont 6t6 calcul~s suivant la m6thode du Pb2~176 la teneur en Pb ~~ a servi de contr61e pour...de la premiere min6ralisation du mat6riau. L'auteur discute le cas du plomb ayant une composition isotopique...isotopique anormale semblable ~ celle du plomb de Joplin. ICpaT~oe co~ep maH~e B~ar~ ~ccae~oBaHH 150 ripe6...oeeurence of trace elements (18), especially Ag, in the galena sample. Being secondary, recrystallized minerals...Measurement of the isotopic composition of sulfur in galena, 5. Geological or mineralogical evidence. Instructive |  | | Book | | basic understanding of the geology of an area or region will never happen without initial observation of...Territories 31 Algeria Angola Benin Botswana Burkina Faso Burundi Cameroon Canary Islands (Spain) Cape...(1872) on East Africa, in which the Great Lakes region of central eastern Africa is very poorly figured...The western part of the southern African Archean province is also concealed by up to 200m of the Kalahari...the stabilization of the southern Africa Archean Province. 3 Paleoproterozoic Basement Development (Fig |  | Voicu, Gabriel, Bardoux, Marc, Jebrak, Michel, Crepeau, Robert (1999) Structural, mineralogical and geochemical studies of the Paleoproterozoic Omai gold deposit, Guyana. Economic Geology, 94 (8) 1277-1303 doi:10.2113/gsecongeo.94.8.1277 | Journal (article/letter/editorial) | | structural, textural,andminer- The rocks of the Omai mine consist of mafic and intermeby polygenic conglomerates...Las Cristinas ß' ' (Venezuela) AREMU PETER'S• MINE BARAMA-MAZARUNI ß . SUPERGROUP TRANS-AMAZONIAN...p)xite All veinsets pyrrhotite H3 (basalt) galena t I I (Omai stock) ehaleopyrite sphalerite molybdenite...withwallrockinveins hosted by of chalcopyrite, gold,tellurides, galena, and,rarely,quartz andesires andbasalts butis scarce...alsoreported galena in the 1288 VOlCU ET AL. ,f iI•A•t • , , . *<7*' . o!: . ,. :: CoM, galena, telh]ride |  | | Journal (article/letter/editorial) | | Granites) et les ,,Granites Jeunes" (Younger Granites) du Nigrria semblent avoir 6t6 placrs respectivement...no isotope age determinations available for the region. With the appearance of the paper by HOLMES and...terms are used in a relative sense for a given region only, it being realized that the basic problem...transgressions heralding the Palaeozoic. In the Ahaggar region of Central Sahara, KILIAN (1982) devised two terms...place of Archaean, used by older workers, the type region being at D6rouvarou, Dahomey, the name referring |  | | Journal (article/letter/editorial) | | Light rare earth elements enrichment in an acidic mine lake (Lusatia, Germany)—Elke Bozau, Marc Leblanc...anthropogenic factors influencing mercury speciation in mine wastes: An EXAFS spectroscopy study— Christopher...Lead isotopic composition of Galena from gold deposits of the Amur region—N.S. Ostapenko and V.G. Moiseenko...Wilson Geostatistical resource estimation for the Poura narrow-vein gold deposit—D. Roy, S.D. Butt, and...Selenium source in the selenosis area of the Daba region, South Qinling Mountain, China—Luo Kunli, Xu Lirong |  | | Report (volume) | | in India as much as to members of the special department of Government organised to extend our knowledge...employed by the engineers of the Public Works Department for brick-burning purposes at Mianwali, but it...aapo ha ated at Khef 212® F. b> i MianwiU^ poura of ccal. Punjab — continued. Analyses of...chief item of expenditure would be on account of mine roads. .As the coal above free drainage level becomes...elevation of the mines, it would not be the mine entrance.. mouths of some of the possible, |  | | Report (issue) | | highest-lying diamond pipe. Commissioning Letseng mine at 10 500 feet during the last two years has called...Whatever you're mining, wherever you're mining, mine it on Bridgestones Bridgestones — for all the variables...Operating conditions differ enormously from mine to mine. Not only are there variations in the kind of...Whatever you’re mining, wherever you’re mining, mine it on Bridgestones. iaaseinn Money — BRIDGE STONE...allow the present low level of explora- tion and mine planning to persist. Finding the Finance the financial |  | | Report (volume) | | DEPARTMENT OF THE INTERIOR FRANKLIN K. LANE, Secretary UNITED STATES GEOLOGICAL SURVEY GEORGE OTIS SMITH...special interest are considered. Outside of the department of chemistry several divisions of the subject...Pharmacie. *M61anges physiques et chimiques tire's du bulletin physico-mathe'matique, Acad6mie imp^riale...Ann. (Crell), 1796, i, 166. 1790: 2. HIELM. Union du platine avec 1'oxide de molybdene et avec le molybde'ne... Pt. 1792: 1. T. BERGMAN. L7or blanc ou platine du Pinto. (Note on occurrence from' * Un chapitre de |
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