 | | Journal (article/letter/editorial) | | State of the Art”, Porto, May 2007 Foordite-thoreaulite, Sn2+ Nb2O6 –Sn2+ Ta2O6 : compositional variations... MB, Canada R3T 2N2 Abstract: The foordite-thoreaulite series of Sn2+ -bearing Nb, Ta-oxide phases is...a broad range of nearly continuous foordite-thoreaulite solid solution: at. Ta/(Ta+Nb) = 0.23–0.92. Valence...3+ stitution mechanisms dominate the foordite-thoreaulite chemistry: NbTa−1 , Pb2+ Sn2+ −1 and Sb Sn Sn−1...correlation with Ta/(Ta+Nb). Primary large foordite-thoreaulite crystals are compositionaly homogeneous, only |  | | Journal (article/letter/editorial) | | Kibara Belt (mainly Rwanda and the DR Congo), around the Kenticha mine (Ethiopia) and in the Alto Ligonha...predominate in the Man Shield (Sierra Leone), the Congo Craton (DR Congo), the Kamativi Belt (Zimbabwe) and the...importance, Rwanda, the Democratic Republic of the Congo (DRC), Mozambique, Ethiopia, Nigeria and Burundi...content). Burundi DR Congo Ethiopia Mozambique Nigeria Rwanda Africa total World mine production % Africa/world...Africa/world Ta mine production 2008 2009 2010 2011 2012 2013 2014 2015 32 159 45 178 84 321 820 |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Ma) 4.1.1. Man Shield (Sierra Leone) NU 4.1.2. Congo Craton (DRC) 4.1.3. Zimbabwe Craton (Zimbabwe) ...provinces MA 5.1. Archean 5.1.1. Man Shield 5.1.2. Congo Craton 5.2. Paleoproterozoic CE P 5.2.1. Birimian...Shield (Sierra Leone), the Congo Craton TE (Democratic Republic of the Congo), the Kamativi Belt (Zimbabwe)...African countries (Democratic Republic CE P of the Congo, Rwanda, Burundi, and Uganda) have an almost 100-year-long...members of the solid solution series foordite-thoreaulite (Černý et al., 1988; Uher et al., 2008), simpsonite |  | | Book | | The contribution of essentially two chapters from Dr. C. Cuff has considerably enhanced the text as has... K.R. , 1971. Economic geology of the Cleveland Mine, Tasmania. Economic Geology, 66 : 861-878. 41...Greisenization and mineralisation at Anchor tin mine, north-east Tasmania. Transactions Institution of...Ransom, D.M. and Hunt, F.L., 1975. Cleveland tin mine. In: C.L. Knight (Editor), Economic Geology of Australia...Swanson, C O . and Gunning, H.C., 1948. Sullivan Mine. In: Structural Geology of Canadian Ore Deposits |  | | Journal (article/letter/editorial) | | Tetradymite Tetraedrite Thenardite Thomsonite-(Ca) Thoreaulite Thorianite Thorite Thortveitite Thorutite Thulite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized...According to the Raw Materials Group (Sweden), the world mine production in 2005 stood at 19.3 m t metal content | | | Journal (article/letter/editorial) | | Tetradymite Tetraedrite Thenardite Thomsonite-(Ca) Thoreaulite Thorianite Thorite Thortveitite Thorutite Thulite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized...According to the Raw Materials Group (Sweden), the world mine production in 2005 stood at 19.3 m t metal content |  | | Book | | considered to be a natural accumulation of useful mine ra l materials that can be profitably extracted...whereas the other one te nds to flow. At the Dunkin mine of the Breckenridge district, Colorado, the Dunkin...after it passed into shale (Fig. 2-4). In the same mine several le nticul a r ore shoots are separated by...between porphyry and sediments, 350-ft level, Jerome mine, Ontario, Canada. Somewhat simplified after W. L...emplaced in andesite bu t not in schist. Auno r Gold Mine, Ont ario, Canada . After B. S. W. BuITa m. "Struct |  | | Book | | 50, p. 164-168 Heim, Α., 1 9 3 4 , The molybdenum mine at Azegour: Soc. Econ. Geol., v. 29, p. 76-83..., Allanite et epidote dans des corneennes de la mine d'Azegour, Haut-Atlas: Serv. Geol. Maroc. Notes... Maroc): Libr. ünivers. Geneve, 88 p. Notes The mine at Azegour is located on the north side of the High...after 1956; the interest that the geology of the mine has aroused is shown by the large number of publications...the most important of which contains the Azegour mine, and (4) the Toulkine band that abuts against the |  | | Book | | much biased by science with too little sense of mine for beauty) will keep his memory and work, alive...mining Pb, Cu and Ag, the metals extracted from the mine helped the people of Goslar to accumulate wealth...4524/5507 a N New Aplite Kreuzberg Pegmatite Weiss Mine Pegmatite Silbergrube Aplite Granite Quartz vein...classification. Sn-W-Ta-Nb Pegmatites (12a D) The Manono-Kitolo deposits is the most wellknown representative...Sn-W-Nb-Ta-Be-Li province along the eastern boundary of the DR Congo with Burundi, Rwanda and Uganda. Further pegmatites |
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Manono-Kitotolo mine, Tanganyika, DR Congo