 | | Journal (article/letter/editorial) | | decisive contribution can also be made by microlite, wodginite, ixiolite, tapiolite, and the other minerals of...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... Rb, microlite, ixiolite, tapi- Nb, W olite, wodginite Nepheline syenites ± alkaline Mineralized layers...Cs, Be, Rb, Nb microlite, ixiolite, tapiolite, wodginite Main concentrators of tantalum in ores Foidic |  | | Journal (article/letter/editorial) | | production; other Ta-Nb oxides such as tapiolite, wodginite, ixiolite, rutile and pyrochlore-supergroup minerals...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) | | deposits significant Ta is also contained in wodginite, microlite, and tapiolite. Previous solubility...Tantalite (a CGM) is the most common Ta mineral, but wodginite and microlite also host significant amounts of...muscovite, tourmaline, HFSE minerals such as CGMs, wodginite, and microlite, Li silicates, pollucite, beryl;...granite: Granite ± HFSE minerals such as CGMs, wodginite and microlite, Li silicates, lepidolite, cassiterite...(economic in columbite-tantalite, with accessory wodginite and microlite) Nb and Ta (economic in pyrochlore |  | | 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) | | most common Ta-bearing phases, but microlite, wodginite, tapiolite and Ta-rich cassiterite also occur...and the Ta/(Ta+Nb) ratio between 0.07 and 0.93. Wodginite, and microlite formed as late replacements of...of Ta enriched mineral phases (microlite and wodginite) and their common interstitial character. KEYWORDS:...KEYWORDS: Tantalum, Columbite-tantalite, Microlite, Wodginite Introduction New technologies, leading to the...particularly from Burundi, Democratic Republic of Congo (DRC) and Rwanda (Roskill, 2016), where its exploitation |  | Melcher, Frank, Graupner, Torsten, GĂ€bler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂŒr, 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) ...chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in African Ta provinces MA 5.1...1. Archean 5.1.1. Man Shield 5.1.2. Congo Craton 5.2. Paleoproterozoic CE P 5.2.1. Birimian TE 5...variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7.3. Chemical variability of Ta-Nb oxides...production; other Ta-Nb oxides (TNO) such as tapiolite, wodginite, ixiolite, rutile SC R and pyrochlore-supergroup |  | Melcher, F., Graupner, T., Sitnikova, M., Henjes-Kunst, F., OberthĂŒr, T., GĂ€bler, H.-E, Bahr, A., Gerdes, A., BrĂ€tz, H., Rantitsch, G. (2009) Ein Herkunftsnachweis fĂŒr Niob-Tantalerze am Beispiel afrikanischer Selten-Element Pegmatite. Mitteilungen der Ăsterreichischen Mineralogischen Gesellschaft, 155. | Journal (article/letter/editorial) | | conïŹicts, 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 KonïŹikte in der DR Kongo und in den Nachbarstaaten bei. Exportstatistiken...des Sicherheitsrats der Vereinten Nationen fĂŒr die DR Kongo regte die Einrichtung eines ZertiïŹzierungssystems |  | 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) | | number of analyses. Chemical formulae of CGM and wodginite were calculated based on 6 and 8 oxygen atoms...some Sn-Ta-Nb mineralized pegmatites from ManonoâKitotolo, hydrothermal cassiterite reached centimeters...these oxides during magmatic fractionation and wodginite as a rare final product of such fractionation...into the residual melt to produce Ti-Fe-rich wodginite. This hypothesis can also explain the occurrence...from the pegmatite at earlier stages to produce wodginite-group minerals [61]. According to [62], Sn can |  | | 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) |  | | Report (issue) | | Madagascar. Photo by Bild & Text Mager Dedicated to Dr. Eugene Edward Foord (1946 - 1998) For his sincere...elbaite crystals with lepidolite from the Golconda Mine in Minas Gerais, Brazil by Eberhard Equit, 1993...circa 1910 view of the old mine portal on the north side of the Himalaya Mine in San Diego County, CA....An 11 cm tall elbaite group from the Pederneira Mine in Minas Gerais, Brazil. The bottom of the group...Graeber Right: this dravite from the Mikhaylovskoye Mine in the Transbaikal Region of Russia is 4.5 cm tall |  | | Journal (article/letter/editorial) | | Wadeite Wickmanite Willemite Willemseite Witherite Wodginite Wollastonite Woodhouseite WoodrufïŹte Wulfenite...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 ïŹrst 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) | | Wadeite Wickmanite Willemite Willemseite Witherite Wodginite Wollastonite Woodhouseite WoodrufïŹte Wulfenite...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 ïŹrst 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 (issue) | | columbite-(Fe), columbite-(Mn), tantalite-(Mn) and wodginite group species. Secondary minerals include vuggy...apatite, cesian beryl, pollucite, manganotantalite wodginite (âtantalowodginiteâ), lithiophilite, goyazite...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 |  | | Report (issue) | | and siderite from Beaver County, Pa __ Ellsman mine, Glasgow, and Midland Stratigraphic sections, Beaver...tables, it was assumed that Rhodesia had continued to mine at the same rate of about 860 metric tonnes (950...to build a $4 million spodumene concentrator at Manono. Table 14 is included to show world trade for lithium...Lake, Utah, U.S.A. Salar de Atacama, Chile Manono-Kitotolo District, Zaire These represent producing districts...Lithium Corporation of America opened up its own mine some 5 miles northwest of its Bessemer City, North |  | | 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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