 | | Journal (article/letter/editorial) | | filons de quartz et les min4ralisations de columbo-tantalite, de b6ryl, de minerals lithiqnes, de cassit6rite...rare-metal minerals such as cassiterite, columbo-tantalite, petalite, microlite, beryl, spodumene, amblygonite...zoning in 1939 in Maniema, Kivu and Katanga in the Democratic Republic of the Congo and after 1952, in what...has been noted in the Democratic Republic of the Congo, as well as in pegmatite types of Rwanda, Burundi... amblygonite, apatite, cassiterite, coltlmbo-tantalite, wolframite and microlite. When the structures |  | | Journal (article/letter/editorial) | | Mineral Occurrences in the Kivu Belt (Eastern Democratic Republic of the Congo) and Their Relationships...Mineral Occurrences in the Kivu Belt (Eastern Democratic Republic of the Congo) and Their Relationships...UniversitĂ© Officielle du Sud Kivu, Bukavu, Democratic Republic of the Congo; robertwazi@yahoo.fr Ecole...Officielle de Bukavu, Bukavu, Democratic Republic of the Congo Senckenberg Naturhistorische Sammlungen Dresden...the KaragweAnkole Belt (KAB) in the east, and the Kivu Belt (KVB) in the west. Geological detail concerning |  | | Journal (article/letter/editorial) | | within the Kibara Belt (mainly Rwanda and the DR Congo), around the Kenticha mine (Ethiopia) and in the...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 |  | 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...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 |  | 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) ...North-eastern DRC (Ubendian, Orientale and northern North Kivu) D 4.3. Neoproterozoic (1000-542 Ma) TE 4.3...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 |  | | Journal (article/letter/editorial) | | potential of pegmatitic bodies in Numbi, South Kivu Eastern D.R Congo I.A. Oyediran, C. Nzolang, M.P. Mupenge...potential of pegmatitic bodies in Numbi, South Kivu Eastern D.R Congo, LITHOS (2020), https://doi.org/10.1016/j...POTENTIAL of PEGMATITIC BODIES in NUMBI, SOUTH KIVU EASTERN D.R CONGO I. A. Oyediran1,2,* oyediranibrahim2012@g...Department of Geology, Official University of Bukavu, DR Congo 4 Department of Earth Sciences, Kogi State University...Department e- Abstract The Numbi pegmatites of South Kivu Province (D.R.C) in the Kibaran belt which intruded |  | | Journal (article/letter/editorial) | | Mineralogy andgeochemistry of theLueshe deposit, Kivu, BelgianCongo... 734 Geochemical characterof ca...geochemical study of carbonatitesamplesfrom Lueshe,Kivu, Belgian Congo,by the combinedX-ray diffraction-fluores...discoveringa niobium-bearingcarbonatitein Kivu, Belgian Congo. INTRODUCTION TEE ore minerals of nlobium...columbite- tantalite and the pyrochlore-microlite-betafite âą series. Colâąmbite-tantalite containingmore...niobotantalates such as euxenite and sarnarskite. Columbite-tantalite with a lower ratio of Nb to Ta is presentin somesodalithia |  | | Journal (article/letter/editorial) | | arehaie-paleozoie mountain ring extending from the Lower Congo to the Central Highlands and to South West Africa...Rift Valley and the Karroo transgression of the Congo Basin. This "ribbon" is 2500 miles long, width varying...Sn, Nb, W, Au Cu, Co, U, Zn region Ituri, Uele, Kivu, Tanganyika Uganda, Ruanda, Maniema, Katanga Katanga...the Laurentian shield. Inserting the missing link, Kivu-Maniema results in an elongated mineralized belt...Galena from the Kamituga gold quarries of southern Kivu is 980 million years old. The Dwyka tillite of the |  | | 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...only active volcano, Mt. Nyira#on#o north of Lake Kivu. The effectof fenitizingsolutions, carryingsodiumand |  | | Report (issue) | | mineral species, including ixiolite, microlite, tantalite, tapiolite, and wodginite. Tantalum-bearing mineral...for 20 percent; the Democratic Republic of the Congo [Congo (Kinshasa)], 15 percent; Ethiopia, 14 percent;...Spooner, 1988). Central Africaâspecifically Burundi, Congo (Kinshasa), and Rwandaâwas the source of more than...which extends from Katanga Province and Kivu Province in Congo (Kinshasa) into parts of Burundi, Rwanda...Rwanda, and Tanzania, as well as Maniema Province in Congo (Kinshasa). Many of the pegmatites are thought to |  | Loun, Jan, NovĂĄk, Milan, CempĂrek, Jan, Ć koda, Radek, VaĆĄinovĂĄ GaliovĂĄ, Michaela, ProkeĆĄ, LubomĂr, Dosbaba, Marek, ÄopjakovĂĄ, Renata (2018) Geochemistry and secondary alterations of microlite from eluvial deposits in the Numbi mining area, South Kivu, Democratic Republic of the Congo. The Canadian Mineralogist, 56 (2) 203-220 doi:10.3749/canmin.1700091 | Journal (article/letter/editorial) | | IN THE NUMBI MINING AREA, SOUTH KIVU, DEMOCRATIC REPUBLIC OF THE CONGO JAN LOUN§, MILAN NOVAÌK, JAN CEMPIÌREK...Numbi mining area, South Kivu province of the Democratic Republic of the Congo. Two examined pegmatites...microlite) . columbite-group minerals (columbiteâtantalite), wodginite ĂŸ ferrotapiolite; at the Misumari...(berylcolumbite subtype) microlite . cassiterite, columbiteâtantalite ĂŸ wodginiteâferrowodginite. Both pegmatites underwent...granitic pegmatites, Numbi, Democratic Republic of the Congo. § Corresponding author e-mail address: loun.jan@seznam |  | | Journal (article/letter/editorial) | | Geographically, this giant metal province comprises Kivu and Maniema, as well as major portions of the Eastern...Region Provinces of the Democratic Republic of the Congo (DRC). It also includes Burundi and Rwanda, and...attempts to fill this gap. Geological background The Congo Craton was assembled from Archaean nuclei by multiple...higher conglomeratic sections of the Itombwe in South Kivu have a molasse-like character (Cahen et al., 1984)...The Kibara belt forms the eastern margin of the Congo Craton but the actual contact is largely buried |  | | Report (issue) | | corresponding to Al3.93 Ta3.04 O13 (OH). (3) Mumba, Congo; by electron microprobe, H2 O calculated for O:OH...tantalum-rich granite pegmatites. Association: Tantalite, manganotantalite, microlite, tapiolite, beryl...pegmatite, Mtoko, Zimbabwe. In Congo (Zaire), from Mumba, near Lake Kivu, Kivu Province, and in the Manono...pegmatite, Bernic Lake, Manitoba. Name: To honor Dr. Edward Sydney Simpson (1875â1939), Western Australian |  | | Journal (article/letter/editorial) | | polished section. Species studied included columbite-tantalite, stibiotantalite, samarskite,euxenite,allanite...radioactive columbite. The writer is indebted to Dr. A. A. Giardini and to S. H. Quon for assistancein... 0.56, 0.5070 UrOs pegmatite Kuznetsov, 1956 Congo (Belgian) O 01-O.1%a U (11 anal.) pegmatite aver...aver O S/e Van Wambeke, 1955 Northernlugulu,Kivu,Congo (Belgian) 0 03 0 4tl6 UOe pegmatite deKun,...Fremont Co.,Wyomi,ng Ref.: Hanley et oJ., l95O Tantalite occurs as thick stubby crystals in a lepidolite-rich |  | Atibu, Emmanuel K., Arpagaus, Philippe, Mulaji, Crispin K., Mpiana, Pius T., PotĂ©, John, Loizeau, Jean-Luc, Carvalho, Fernando P. (2022) High Environmental Radioactivity in Artisanal and Small-Scale Gold Mining in Eastern Democratic Republic of the Congo. Minerals, 12 (10) 1278 doi:10.3390/min12101278 | Journal (article/letter/editorial) | | Gold Mining in Eastern Democratic Republic of the Congo Emmanuel K. Atibu 1 , Philippe Arpagaus 2 , Crispin...Gold Mining in Eastern Democratic Republic of the Congo. Minerals 2022, Department of Chemistry, Faculty...Kinshasa XI B.P. 190, Democratic Republic of the Congo Department F.-A. Forel for Environmental and Aquatic...River, in the eastern Democratic Republic of the Congo, was evaluated by gamma-ray spectrometry and inductively...Introduction The Democratic Republic of the Congo (DR Congo or DRC) has a vast wealth of mineral resources |  | | Journal (article/letter/editorial) | | orogenic belt extending lrom Uganda. through Rwanda and Kivu. Maniema and Shaba provinces o l Zaire. They arc...Anihlvgonite-montehrasitc Pollucite Xcnotinic Columbite-tantalite Equatorial central and south Africa Beryl Cassiterite...Gatumba area, Rwanda; 3. Kobokobo. Karnituga area, Kivu, Zaire; 4. Manono. Shaba, Zaire: 5. Kamativi. Zimbabwe...phases: ferrocolumbite, by far the commonest phase, tantalite, manganotantalite, wodginite, ferrowodginite,...minerals may be grouped as follows: 1. Columbite-tantalite 2. Ixiolite 3. Wodginite 4. Tapiolite 5 . Sti |  | Graupner, T., Melcher, F., GĂ€bler, H.-E., Sitnikova, M., BrĂ€tz, H., Bahr, A. (2010) Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data. Mineralogical Magazine, 74 (4) 691-713 doi:10.1180/minmag.2010.074.4.691 | Journal (article/letter/editorial) | | concentrations and distribution patterns of columbite-tantalite minerals from Ta-ore provinces worldwide are presented...K EY WORDS : LCT family pegmatites, columbite-tantalite, REE geochemistry, LA-ICP-MS data. Introduction... These include: (1) the Homestead pegmatite, Tantalite Valley, Namaqualand, Namibia, Neoproterozoic (Kibaran)...e.g. CÌernyÌ, 1989, Fig. 1) using a columbite-tantalite quadrilateral. Three ïŹelds TABLE 1. Comparison...fractionation trends of CGM in the columbite-tantalite quadrilateral (XMn (XMn = 100*Mn/ (Mn+Fe)), XTa |  | | Journal (article/letter/editorial) | | filoniennes de la r6gion de Kamituga -- Kivu -- R6p. du Congo A. SAFIANNIKOFF Ing. ~ la Cie mini~re des...pegmatitique mindralisde de la r6gion de Kamituga au Kivu est sans conteste la pegmatite de Kobokobo. Celle-ci...bibliographie a 6t6 d6j~ consacr6e aux pegmafites du Congo, du Rwanda et du Burundi (ADERCA 1950; BERNARD 1954/55;...Compar6e aux autres pegmafites de la vaste rdgion du Kivu, la pegmatite de K o b o k o b o constitue aussi...primaires et secon&aires (°) Min~raux nouveaax pour le Congo (L. V. W.) familie de la plumbogummite uniquement |  | | Journal (issue) | | Southern Rhodesia (now Zimbabwe) that was labeled as Tantalite. The black, water-worn crystal group measures...A label accompanying Heinrichâs small lot of tantalite specimens from the âGeo. Nolan Pegmatiteâ was...black samples from the Geo. Nolan pegmatite as tantalite. Excalibur Mineral Corp. inventory and image....Nolan pegmatite locality, I turned to the three tantalite specimens that accompanied Heinrichâs label. One...it, or I could analyze it, just to see which tantalite it was (Fe or Mn) or maybe it was a columbite |  | | Journal (article/letter/editorial) | | Of the 322 entries*, the Democratic Republic of Congo (formerly Zaire) comes out on top with 88; Namibia...indebted to Dr.Joseph Mandarino of Toronto, Canada, and Dr. Werner Krause of Hiirth, Germany, who supplied dates...briartite shares with the Democratic Republic of Congo and Namibia, and both djerfisherite and niningerite...Localities (1) Kanemite: Kanem region, Lake Chad. CONGO(3) People (2) Fornacite: Lucien Louis Fourneau (18671930)...(18671930), colonial governor, French Congo. Plunchkite: Mr. PlanchC, French explorer. Localities (1) |  | Tack, L., Wingate, M.T.D., De Waele, B., Meert, J., Belousova, E., Griffin, B., Tahon, A., Fernandez-Alonso, M. (2010) The 1375Ma âKibaran eventâ in Central Africa: Prominent emplacement of bimodal magmatism under extensional regime. Precambrian Research, 180 (1) 63-84 doi:10.1016/j.precamres.2010.02.022 | Journal (article/letter/editorial) | | trending NE over 1300 km across the Central African Congo craton, from the Angola-Zambia-D.R.Congo border...border triplejunction in the SW, through Katanga and Kivu-Maniema (DRC), Rwanda and Burundi, up to SW Uganda...our re-deïŹnitions, we do not take into account the Kivu-Maniema (DRC), because of its geological complexity...ïŹeld data, although âsome continuityâ of the KAB in Kivu-Maniema is obvious. For the KAB, we document 10...the Katanga region in the Democratic Republic of Congo (DRC) up to the Ankole region in SW Uganda (Fig |  | | Journal (article/letter/editorial) | | described from an alluvial cassiterite deposit in Kivu, Congo, by Safiannikoff & Van Wambeke (1961). Although...Mumba tin gravels, Masisi, Kivu Province, Democratic Republic of the Congo. 'Mumbite' (Van Wambeke 1970...localities. From its type locality at Mumba , Kivu, Congo , the mineral was reanalysed by Eid & von Knorring...& DE CASTRO, C. (2005): Mineral chemistry of tantalite species new in the Borborema Pegmatitic Province |  | Villeneuve, M., GĂ€rtner, A., Kalikone, C., Wazi, N., Hofmann, M., Linnemann, U. (2019) U-Pb ages and provenance of detrital zircon from metasedimentary rocks of the Nya-Ngezie and Bugarama groups (D.R. Congo): A key for the evolution of the Mesoproterozoic Kibaran-Burundian Orogen in Central Africa. Precambrian Research, 328. 81-98 doi:10.1016/j.precamres.2019.04.003 | Journal (article/letter/editorial) | | rocks of the Nya-Ngezie and Bugarama groups (D.R. Congo): A key for the evolution of the Mesoproterozoic...Dresden, Germany c UniversitĂ© oïŹcielle du Sud Kivu, Bukavu, Congo b A R T I C LE I N FO A B S T R A C T ...distinction of the KAB and the poorly studied northwestern Kivu Belt (KVB) has to be suggested. Latest researches...and Bugarama groups. Both of them occur along the Congo, Rwanda and Burundi borders and have frequently...region of southeastern Congo to Uganda through the Kivu province of eastern Congo, Burundi and Rwanda (Fig |  | | Journal (article/letter/editorial) | | various civil wars in the Democratic Republic of Congo (DRC) and the western world media business. Coupled...(columbiteâtantalite ore) has been portrayed in the worst simplistic manner (âWeâre all raping the Congo, one...from Central Africa (essentially North and South Kivu in DRC, Rwanda, Burundi). The formerly largest Ta |  | Shikika, Alidor, Zabene, Francois, Muvundja, Fabrice, Mugumaoderha, Mac C., Colaux, Julien L., Aatach, Mohamed, Gaydardzhiev, Stoyan (2021) Extraction of Ta and Nb from a Coltan Bearing Ore by Means of Ammonium Bifluoride Fluorination and Sulfuric Acid Leaching. Minerals, 11 (12) 1392 doi:10.3390/min11121392 | Journal (article/letter/editorial) | | Bukavu), Bukavu B.P. 854, Democratic Republic of the Congo; fzabene@gmail.com (F.Z.); amisimuv@yahoo.fr (F...Bukavu), Bukavu B.P. 285, Democratic Republic of the Congo Namur Institute of Structured Matter (NISM), Synthesis...able to recover more than 90% of Ta and Nb from tantalite being done [5â7] are reporting to be able to recover...extraction rate of over 93% Ta and 96% Nb from mangano-tantalite Mn(Ta,Nb)2 O6 under pressure leaching at 200 âŠ...rateare of over 93% Ta and 96%only Nb from mangano-tantalite 2O6 under hydrofluoric acid media [22]. In addition |
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