 | | Journal (article/letter/editorial) | | but there are a number of deposits in Ghana, Burkina Faso and Mali that formed before the Eburnean Orogeny...flat-lying Tertiary phosphates in Togo and southern Burkina Faso also formed at this time (Markwitz et al., 2015)...volume), sediments (e.g., Essakane in northwest Burkina Faso; Obuasi in Ghana: Fougerouse et al., in press...also be found in southeast and southwest of Burkina Faso including the Youga and Bondi deposits (Orezone...the Paleoproterozoic Gaoua deposit in southern Burkina Faso suggest that copper and gold were formed during |  | | 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 |  | | Journal (article/letter/editorial) | | 1042-1052 The VanadiferousMagnetiteDepositsof the Oursi Region, Upper-Volta H. NEYBERGH, Service Geologiquede...cycles (geochronologiclimits: 2,700-1,600 m.y.). The Oursi area comprisesa dome of syntectonicgranite partly...ø25'N/14ø45'N, taketheformof veins Introduction TI•v, Oursi regionis locatedin the north of Upper- of magnetitein...regionby 1042 MAGNETITE 20 10 DEPOSITS, OURSI REGION, UPPER-VOLTA 1043 cessionis as follows (Bouladon...onsalso occur. Fro. 1. Location map of the Oursi region (black rectangle), Upper-Volta. Dellour (1961 |  | | Report (issue) | | United States of America 1992 930-K U.S. DEPARTMENT OF THE INTERIOR MANUEL LUJAN, jr., Secretary...Geology and Geophysics; and A. Sozanski, Canadian Department of Energy, Mines and Resources (EMR), Mineral...cobalt, titanium, natural graphite, lithium, and tin are now published. Additional studies on vanadium...of Mines and the Geological Survey of the U.S. Department of the Interior; the Geological Survey of Canada...and the Mineral Policy Sector of the Canadian Department of Energy, Mines and Resources; the Federal Institute |  | Gunn, A.G., Dorbor, J.K., Mankelow, J.M., Lusty, P.A.J., Deady, E.A., Shaw, R.A., Goodenough, K.M. (2018) A review of the mineral potential of Liberia. Ore Geology Reviews, 101. 413-431 doi:10.1016/j.oregeorev.2018.07.021 | Journal (article/letter/editorial) | | of these are considered to be part of a single province that includes Jurassic age diamondiferous kimberlites...rocks form linear greenstone belts throughout the region. On the basis of field relationships, the Archaean...which are part of the Central Atlantic Magmatic Province (CAMP) that was emplaced during the early stages...greenstone belts in Ghana, Mali, Senegal, Niger, Burkina Faso and Côte d’Ivoire (Figure 2). At Ity in Côte... The total gold endowment of the West African province is about 10,000 tonnes, which is comparable with |  | | Report (issue) | | PAPER WASHINGTON 926-B 1975 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary...defined as containing principal ore minerals, but hematite (Fe 2 0a) is presmore than about 1 percent Ti02...51, fig. 2, and B3 table 1) in the Karelo-Kola region in the northwestern part of the Soviet Union are...Ore type Map No. (fig. 2) State, PJ:ovince, or region Grade of "ore" (percent) Mine, deposit, area.... .. .. .. .. .. .. Piedmont province ........... Appalachian province. . . . . . . . Duluth Complex |
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