| | Journal (article/letter/editorial) | Africa and South America. INTRODUCTION COLUMBITE-TANTALITE was extractedfor centurieswith tin in Malaya and...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...standardaccompanyingmineral of all columbite-tantalite deposits that are now beingmined. Earth acidsare...Mrima, Kenya. Bastnâ˘/sitewas found at Kwaraa, Tanganyika,and at Karonge,Ruanda-Urundi. The great Mountain | | | Journal (article/letter/editorial) | and albite-spodumene rare-metal pegmatites with tantalite-columbite, microlite, and ixiolite in the Ancient...are Ta-rich tantaloniobates. They are usually tantalite and/or Ta-rich columbite, but a noticeable, sometimes...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...cryolite, U, Li Pitinga, Toongi, Halzan Buregtei Tantalite, columbite*, Sn, Li, fluorite, Cs, Rb, microlite | | | 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...the Jos Plateau (Nigeria);  Mn-rich columbite-tantalite is typical of the Alto Ligonha Province (Mozambique)...Arabian-Nubian Shield (Egypt, Ethiopia) and the Tantalite Valley pegmatites (southern Namibia) and  Large...importance, Rwanda, the Democratic Republic of the Congo (DRC), Mozambique, Ethiopia, Nigeria and Burundi | | | Journal (article/letter/editorial) | foordite-thoreaulite + columbite-tantalite + Ta-rich cassiterite. Simpsonite is present in Manono and Maniema pegmatites...foordite, thoreaulite, cassiterite, columbite, tantalite, simpsonite, alkali-bearing Nb-Ta minerals, granitic...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 | | 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...of minerals, commonly dominated by columbite-tantalite group minerals. In cases, their compositions and...measured in a representative number of columbite-tantalite grains from a given sample. Some elements, e.g...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 | | | Journal (article/letter/editorial) | deposits are the columbite group minerals (columbite-tantalite), but at some ore deposits significant Ta is also...where Nb-Ta resources are dominantly from CGMs. Tantalite (a CGM) is the most common Ta mineral, but wodginite...group minerals Ta and Nb (economic in columbite-tantalite, with accessory wodginite and microlite) Nb and...such as muscovite or tourmaline, together with tantalite (Van Lichtervelde et al. 2006). American Mineralogist...crystallized at 700 °C, which is a consequence of tantalite-(Mn) being too soluble in peralkaline melts of | | | Journal (article/letter/editorial) | LiâSnâTa deposits, both located in Africa: ManonoâKitotolo (Kibaran belt) and Kamativi (Dete-Kamativi...formed at the beginning of the cycle: Mabouni (Congo Craton), Beloziminskoe and Sredneziminskoe (East...TaâNi minerals with a more abundant Ta fraction: tantalite, high-Ta columbite, microlite, woginite, and other | | | Report (issue) | - - - - - - - - - - - - - - - - - - - - - - - 8. Mine production of lithium by country, 1980 to 1986-...times larger, than was thought when the decision to mine was made. Experts with a sound knowledge of a deposit...spodumene, lepidolite, and amblygonite, and Manono-Kitotolo, Zaire, are localities having large zoned pegmatite...are mined mostly from the surface, although the mine at Bernie Lake, Canada, is TABLE LITHIUM RESOURCES...countries, especially the Soviet Union. 9 TABLE 8.-Mine production of lithium by country, 1980 to 1986 | | | Journal (article/letter/editorial) | and igneous complexes and correspond to operating mine sites. This study reveals that structural interpretation...Burundi in the south and the Democratic Republic of Congo (DRC) in the west. The study area covers approximately...exploration. The good correlation between active mine sites, interpreted structures and suggested target...overprinting of the cassiterite and columbite-tantalite bearing pegmatites of the Gatumba area, Rwanda...and Li mineralization of Manono-Kitotolo (Katanga, Democratic Republic of Congo). Ore Geol. Rev., 72, 373-390 | | | Book | these ores . ⢠'fhe handbook has been written by Dr. C. F, Davidson, Chief Geologist of the r\tomic Energy...the important pitchblende deposits of the Belgian Congo and of Canada were developed, estimated annua~ output...will bear the cost of aeroplane freighting when a mine is situated in remote and otherwise inaccessible...in vughs in the pitchblende deposits of Belgian Congo, but the common mode of occurrence of this mineral...be found growing on pitchblende specimens in old mine dumps. The refractory uranium ores The uranium | | | Journal (article/letter/editorial) | from the corrosion of columbite and especially tantalite rims are common. The Mn/(Mn+Fe) ratio varies between...replacements of CGM and occur associated with tantalite and cassiterite. Subhedral to anhedral cassiterite...interstitial character. KEYWORDS: Tantalum, Columbite-tantalite, Microlite, Wodginite Introduction New technologies...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 | | 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) ...Mineralogy NU 5. Mineral chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in African...provinces MA 5.1. Archean 5.1.1. Man Shield 5.1.2. Congo Craton 5.2. Paleoproterozoic CE P 5.2.1. Birimian...sources 7.2. Compositional variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7.3. Chemical...Shield (Sierra Leone), the Congo Craton TE (Democratic Republic of the Congo), the Kamativi Belt (Zimbabwe) | | 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) | magmatic cassiterite); (3) anhedral aggregates; (4) tantalite-(Fe)-ferrowodginite (FeSnTa2 O8 ) intergrowths...triphylite-lithiophilite series and rare ferrowodginiteâtantalite intergrowths. Triphylite-lithiophilite is abundant...P-rich pegmatite melts [37â40]. Ferrowodginiteâtantalite intergrowths are rare and mainly occur in the...spotted in (Type 3)the showing patchy zoning the tantalite-(Fe)-ferrowodginite Ta-Fe-rich domains (the brighter...Zone factures. of No. 90 (d) pegmatite. (e,f)tantalite-(Fe)-ferrowodginite showing subhedral cassiterite | | | Journal (article/letter/editorial) | Ruggedized SEM platform allows the application even in a mine-site environment. Mineralogic Mining features four...views and BSE image image(rutile) of zonednatural tantaliteâcolumbite grains in an ore concentrate from Africa...indicated by arrows. (k) Frame view of an of zoned tantalite-columbite grains in an ore concentrate from Africa...compared with published data from various authors. Tantalite, columbite-(Fe), columbite-(Mn) as well as microlith...columbite quadrilateral with tapiolite (FeTa2 O6 ), tantalite (MnTa2 O6 ), columbite-(Fe) (FeNb2 O6 ) and columbite-(Mn) | | 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) | mineralization is mainly Nb-Ta-Sn as columbite-tantalite (Coltan) and cassiterite, and these granites have...20,21]. Nb-Ta bearing oxide minerals (columbo-tantalite (coltan), pyrochlore) are used to establish fractionation...(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 | | Makutu, Douxdoux Kumakele, Seo, Jung Hun, Lee, Insung, Oh, Jihye, Kang, Pilmo, Ongendangenda, Albert Tienge, Makoka, Frederic Mwanza (2023) Magmatic-Hydrothermal Fluid Processes of the Sn-W Granites in the Maniema Province of the Kibara Belt (KIB), Democratic Republic of Congo. Minerals, 13 (4) 458 doi:10.3390/min13040458 | Journal (article/letter/editorial) | of the Kibara Belt (KIB), Democratic Republic of Congo Douxdoux Kumakele Makutu 1 , Jung Hun Seo 2, * ...of the Kibara Belt (KIB), Democratic Republic of Congo. Minerals 2023, 13, 458. https:// doi.org/10.3390/min13040458...University, Kinshasa 012, Democratic Republic of the Congo Correspondence: seo28@snu.ac.kr; Tel.: +82-10-4457-4877...provinces in Africa are as follows: 1.1 Man Shield, 1.2 Congo Craton, 1.3 Zimbabwe Craton, 1.4 Kaapvaal Craton;...Kibara Belt (KIB) in the Democratic Republic of the Congo (DRC) contains massive Sn-W and other mineral-bearing | | | Journal (issue) | throughout Africa, including the Democratic Republic of Congo. P4 46 14 20 30 34 38 42 46 FOCUS FEATURE: CRITICAL...throughout Africa, including the Democratic Republic of Congo (DRC). Recently, it launched a pilot test plant...challenging applications. In the Democratic Republic of Congo (DRC), where the mining industry plays a significant...tin and tantalum â from its primary asset, the Manono tailings dumps in the DRC. Tantalexâs CEO, ERIC...2025. T he Manono dumps, located close to the town of Manono in the DRCâs Tanganyika Province, are | | Chen, Zhuo, Chen, Jianping, Liu, Tao, Li, Yunfeng, Yin, Qichun, Du, Haishuang (2023) Regional Quantitative Mineral Prospectivity Mapping of W, Sn, and Nb-Ta Based on Integrated Information in Rwanda, Central Africa. Minerals, 13 (2) 189 doi:10.3390/min13020189 | Journal (article/letter/editorial) | and on the west by the Democratic Republic of the Congo. The country lies 120 km south of the equator, covering...basement [36]) during the subduction between the Congo and Tanzania cratons [43]. The granitic intrusions...Rwanda: First results from deep drilling of a coltan mine in Rwanda and first detailed description of Li minerals...overprinting of the cassiterite and columbiteâtantalite bearing pegmatites of the Gatumba area, Rwanda...and Li mineralization of Manono-Kitotolo (Katanga, Democratic Republic of Congo). Ore Geol. Rev. 2016, | | Van Daele, J., Hulsbosch, N., Dewaele, S., Boiron, M.-C., Piessens, K., Boyce, A., Muchez, Ph. (2018) Mixing of magmatic-hydrothermal and metamorphic fluids and the origin of peribatholitic Sn vein-type deposits in Rwanda. Ore Geology Reviews, 101. 481-501 doi:10.1016/j.oregeorev.2018.07.020 | Journal (article/letter/editorial) | located in Central Africa, covering parts of D.R. Congo, Rwanda, Burundi, Uganda and Tanzania. The KAB consists...the Ntunga mine in Rwanda (Hulsbosch et al., 2017; Varlamoff, 1969). The pegmatites of the mine sites of...size up to 5 cm * 5 cm * 1 cm. Columbite and tantalite (Coltan Group Minerals, CGM) and cassiterite mineralization...ANR-10-LABX-21âLABEX RESSOURCES21). Dr. Francis Gatare, dr. Emmanuel Munyengabe, dr. Michael Biryabarema and Alain...area. We also would like to express our gratitude to dr. Elvira Vassilieva (KU Leuven) for her help with | | | Journal (article/letter/editorial) | Mountain Pass mine and the Bear Lodge deposit 67 (United States), or the Mount Weld mine (Australia)...resource, development of 84 an integrated approach to mine value chain optimisation is required on a strategic...on the 95 whole orebody and long-term life-of-mine scale and tactical geometallurgy which relates to...amblygonite (LiAlPO4F), zircon, Nb-Ta oxides (columbite-tantalite and ilmenorutile) and uraninite. The 193 mineralogy...amblygonite/montrebasite, apatite, fluorite, Mn- 227 tantalite, microlite, Ta-cassiterite, ilmenite, monazite | | | 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 | | | 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 | | | 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 | | | Journal (article/letter/editorial) | 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...mining company. ⢠World mine production ⢠Proven + probable resources ⢠Mine production by country ⢠|
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