 | | Journal (article/letter/editorial) | | major depositsand especially Messrs.Bradford,A. Burne,Dr. de Neve, Major Farrington,Dr.Ing. Hermann, Messrs...The writer is indebted to Dr. Charles H. Behre,to Dr. RichardH. Jahnsand Dr. KennethBurke who kindly...eluvia, carbonatites Euxenite: alluvia, pegmatites Tapiolite: alluvia, pegmatites Niobo-tantalates of the...Mrima, Kenya. Bastnâ˘/sitewas found at Kwaraa, Tanganyika,and at Karonge,Ruanda-Urundi. The great Mountain..."Pandaite," the Sr-Ba pyrochloreoccursin biotitite in Tanganyika, Lueshite, the sodium-niobate, was found in biotitite |  | | Journal (article/letter/editorial) | | current Ta production; other Ta-Nb oxides such as tapiolite, wodginite, ixiolite, rutile and pyrochlore-supergroup...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 |  | | Journal (article/letter/editorial) | | also be made by microlite, wodginite, ixiolite, tapiolite, and the other minerals of the same type. GEOLOGY...Nechalacho; (19) Mt Weld; (20) Kamativi; (21) Manono-Kitotolo; (22) Motzfeldt; (23) Tanbreez; (24) Crevie;...Brockman Pitinga Nechalacho Mt Weld Kamativi Manono-Kitotolo Motzfeldt Tanbreez Crevie Kenticha Three Alloes... Li, Sn, Cs, Be, Rb, Nb microlite, ixiolite, tapiolite, wodginite Main concentrators of tantalum in...object, Mt Weld (Yilgarn craton). Here, the operating mine produces only rareearth ores beyond the zones, containing |  | | Journal (article/letter/editorial) | | + Ta-rich cassiterite. Simpsonite is present in Manono and Maniema pegmatites. Local replacement of foordite-thoreaulite...first described from the Manono granitic pegmatite, Democratic Republic of Congo (DRC), formerly Zaire (Buttgenbach...alkali-bearing Nb-Ta phases are known from the Manono, DRC and Ungursai, Kazakhstan granitic pegmatites...evolution of the associated secondary minerals from the Manono, Maniema, Lutsiro, Urubu and Ungursai granitic...to Palaeozoic rare-element granitic pegmatites (Manono, Maniema, Urubu, Ungursai) or alluvial clastic |  | | Journal (article/letter/editorial) | | is also contained in wodginite, microlite, and tapiolite. Previous solubility experiments of HFSE minerals...at Tanco, ÄernĂ˝ 2005; or Manono-Kitotolo, Katanga, Democratic Republic of Congo, Dewaele et al. 2016) or...and Li mineralization of Manono-Kitotolo (Katanga, Democratic Republic of Congo). Ore Geology Reviews,...from crystallization experiments of tantalite-tapiolite. American Mineralogist, 1087 103, 1401â1416 |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂźr, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumâ(niobiumâtin) mineralisation in African pegmatites and rare metal granites: Constraints from TaâNb oxide mineralogy, geochemistry and UâPb 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) ...5. Mineral chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in African Ta provinces...provinces MA 5.1. Archean 5.1.1. Man Shield 5.1.2. Congo Craton 5.2. Paleoproterozoic CE P 5.2.1. Birimian...Compositional variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7.3. Chemical variability...production; other Ta-Nb oxides (TNO) such as tapiolite, wodginite, ixiolite, rutile SC R and pyrochlore-supergroup |  | | Journal (article/letter/editorial) | | Ta-bearing phases, but microlite, wodginite, tapiolite and Ta-rich cassiterite also occur. CGM crystals...particularly from Burundi, Democratic Republic of Congo (DRC) and Rwanda (Roskill, 2016), where its exploitation...obtained from the ancient open pit of the Penouta mine (Fig. 1), corresponding to the apical zone. Whole...Ercit et al. (1992a). The structural formula of tapiolite and cassiterite were calculated on the basis of...rich phases in the Penouta leucogranite although tapiolite, microlite, and wodginite also occur. Cassiterite |  | Melcher, F., Graupner, T., Sitnikova, M., Henjes-Kunst, F., OberthĂźr, T., Gäbler, H.-E, Bahr, A., Gerdes, A., Brätz, H., Rantitsch, G. (2009) Ein Herkunftsnachweis fĂźr Niob-Tantalerze am Beispiel afrikanischer Selten-Element Pegmatite. Mitteilungen der Ăsterreichischen Mineralogischen Gesellschaft, 155. | Journal (article/letter/editorial) | | conďŹicts, especially in the Democratic Republic of the Congo, is widely discussed. In many African countries...Nationalpark in der Demokratischen Republik Kongo (DR Kongo; âDurban Processâ). Die Studie basierte auf...machten sich Rebellengruppen in den Ostprovinzen der DR Kongo zu nutze. Der illegale Abbau und Handel von...trug so zur Fortsetzung bewaffneter KonďŹikte in der DR Kongo und in den Nachbarstaaten bei. Exportstatistiken...des Sicherheitsrats der Vereinten Nationen fĂźr die DR Kongo regte die Einrichtung eines ZertiďŹzierungssystems |  | | Journal (article/letter/editorial) | | Ruggedized SEM platform allows the application even in a mine-site environment. Mineralogic Mining features four...columbite-(Fe), columbite-(Mn) as well as microlith and tapiolite-(Fe) were determined as Nb-Ta minerals in the...be sorted in the columbite quadrilateral with tapiolite (FeTa2 O6 ), tantalite (MnTa2 O6 ), columbite-(Fe)...their different modal compositions. Occurrence of tapiolite-(Fe) is a strongly limiting argument for the origin...Democratic Republic of Congo. A further limitation based exclusively on tapiolite-(Fe) is not representative |  | Feng, Yonggang, Liang, Ting, Yang, Xiuqing, Zhang, Ze, Wang, Yiqian (2019) Chemical Evolution of Nb-Ta Oxides and Cassiterite in Phosphorus-Rich Albite-Spodumene Pegmatites in the KangxiwaâDahongliutan Pegmatite Field, Western Kunlun Orogen, China. Minerals, 9 (3) 166 doi:10.3390/min9030166 | Journal (article/letter/editorial) | | some Sn-Ta-Nb mineralized pegmatites from ManonoâKitotolo, hydrothermal cassiterite reached centimeters...and Li mineralization of Manono-Kitotolo (Katanga, Democratic Republic of Congo). Ore Geol. Rev. 2016,...from crystallization experiments of tantalite-tapiolite. Am. Mineral. J. Earth Planet. Mater. 2018, 103 |  | | 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 |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...and Li mineralization of Manono-Kitotolo (Katanga, Democratic Republic of Congo): current state of knowledge...Skarn zonation and fluid evolution in the Groundhog Mine, Central Mining District, New Mexico. Econ Geol...diorite porphyry in the Shinyama area, Kamaishi mine, Japan. Min Geol 28:99â109 Nakano T (1998) Pyroxene...Tungsten-bearing skarns of the Sierra Nevada. I. The Pine Creek mine, California. Econ Geol 77:823â844 Nicolescu S (1996) |  | Fosso Tchunte, Periclex Martial, Tchameni, Rigobert, AndrĂŠ-Mayer, Anne-Sylvie, Dakoure, Hilaire Somtebda, Turlin, François, Poujol, Marc, Nomo, Emmanuel Negue, Saha Fouotsa, Alliance Nicaise, Rouer, Olivier (2018) Evidence for Nb-Ta Occurrences in the Syn-Tectonic Pan-African Mayo Salah Leucogranite (Northern Cameroon): Constraints from Nb-Ta Oxide Mineralogy, Geochemistry and U-Pb LA-ICP-MS Geochronology on Columbite and Monazite. Minerals, 8 (5) 188 doi:10.3390/min8050188 | Journal (article/letter/editorial) | | (Modified from [45,58â60]. 1.1 Man Shield. 1.2 Congo rare-element pegmatite and rare-metal granite provinces...Birimian Province. 2.2 Kibalian in North-Eastern 1.2 Congo Craton. 1.3 Zimbabwe Craton. 1.4 Kaapvaal Craton...Kibalian of North-Eastern Democratic Republic of Congo (DRC). of 3.1Congo Kibara(DRC). Belt. 3.2 Schist...evolution of the CAFB in the northern edge of the Congo Craton is not well defined, but several features...The late-Neoproterozoic CAFB at the north of the Congo craton was recognized by the widespread occurrence |  | | Journal (article/letter/editorial) | | Synchysite Szaybelyite Taaffeite Tachyhydrite Talc Tapiolite Tarkianite Teallite Tennantite Tenorite Tephroite...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 mineâ. This includes the imperative âif you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is ďŹrst 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) | | Synchysite Szaybelyite Taaffeite Tachyhydrite Talc Tapiolite Tarkianite Teallite Tennantite Tenorite Tephroite...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 mineâ. This includes the imperative âif you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is ďŹrst 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 | | 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 |  | | Book | | for use in 3D modelling during exploration work or mine planning. While they fully characterize compositional...quantitative manner with respect to their signiďŹcance for mine planning and mineral processing [25]. The main focus...Purevgerel, S. GeometallurgyâA route to more resilient mine operations. Minerals 2018, 12, 560. [CrossRef] Compan... A. Geometallurgical model of a copper sulphide mine for long-term planning. J. South. Afr. Inst. Min...comprehensive ore characterization to aid in early mine planning, uncrushed rock samples are most suitable |  | | Journal (issue) | | Agardite-(Nd), NdCu6(AsO4)3(OH)6Î3H2O, from the Hilarion Mine, Lavrion, Greece: mineral description and chemical...new copper arsenate minerals from the Majuba Hill Mine, Pershing County, Nevada. American Mineralogist...2000: Complexly zoned fibrous tourmaline, Cruzeiro Mine, Minas Gerais. Brazil: A record of evolving magmatic...in the composition of a samarskite crystal from mine 298 in the Ilmen Reserve. Proceedings of the Chelyabinsk...exposed after campaigns of exploration directed to mine their commodities, being the main targets the blue |
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