 | | Journal (article/letter/editorial) | | of the latter produced numerous pegmatitic and quartz vein deposits with Sn, W, Nb/Ta, Li, Be and Au...Au. Other auriferous and locally Pt-bearing quartz veins and breccias are not spatially related to tin...southwest, through Zaire, Burundi, Tanzania and Rwanda to southwestern Uganda in the NNE. Its overall...Economic mineralization is known mainly from its northern sectors, within three geographically separated...Rift and a northeastern province covering Burundi, Rwanda, the West Lake district of Tanzania and southwest |  | | Journal (article/letter/editorial) | | and present metal prices, gold in hydrothermal quartz veins is the major commodity, followed by tin either...or in sheeted, hydrothermal quartz veins. Many deposits in the province occur in siliciclastic metasedimentary...platinum) province; and the early Neoproterozoic (1 Ga) Kibara rare metal and gold province that is the...application of modern concepts and technologies, this province is drastically underexplored. Keywords: Gold,...Department of Geology and Mines, Rwanda Natural Resources Authority, Kigali, Rwanda 3 Technical University of |  | | Journal (article/letter/editorial) | | with cupolas at tectonic highs. Pegmatites and quartz veins with Sn. W, NbiTa, Be and Li are derived...relation to N-S trending folds and thrusts. Gold-rich quartz veins occurring in districts marginal to the Sn-W...southwest, through Zaire, Burundi, Tanzania, and Rwanda to southwest Uganda in the north northeast. Its...Economic mineralization is known mainly from its northern sectors, within three geographically separated...Rift and a northeastern province covering Burundi, Rwanda, the west lake district of Tanzania, and southwest |  | | Journal (article/letter/editorial) | | Kibaran (late Mid-Proterozoic) tin, tungsten and gold quartz vein deposits in Central Africa: a fluid inclusions...fluids depositing tin and tungsten ores in Kibaran quartz vein deposits allow the modelling of devolatizing...granites as their source at depth. Fluids forming gold quartz veins and breccias are different from the first...belt is mainly known as a tin and tungsten ore province; more recently, exploration and mining have concentrated...Final compressive movements affected mineralized quartz veins by folding and thrusting. Kibaran tin granites |  | | Journal (article/letter/editorial) | | through high-grade Sn-quartz veins with thin pegmatites to shallower mineralised quartz- mica veins. The pegmatites...Li mica as well as petalite and ambylgonite in a quartz albite matrix. An overall model is proposed in...of mineralisation found at the major Rutongo deposit in Rwanda (Dewaele et al. 2010) but dissimilar to...of the cassiterite mineralisation in the Rutongo area, Rwanda (Central Africa): current state of knowledge...bearing quartz veins: insights from the Musha and Ntunga deposits of the Karagwe-Ankole Belt, Rwanda. J Afr |  | Goodship, A., Dace, A., OāHare, P., Uwiringiyimana, J., Siddle, R., Moon, C. (2019) Geology and genesis of the Musha-Ntunga Sn-Ta-Li-Nb vein-pegmatite deposit, Rwanda: first results from deep drilling of a coltan mine in Rwanda and first detailed description of Li minerals. Applied Earth Science, 128 (2) 47-48 doi:10.1080/25726838.2019.1602953 | Journal (article/letter/editorial) | | vein-pegmatite deposit, Rwanda: ļ¬rst results from deep drilling of a coltan mine in Rwanda and ļ¬rst detailed...although high-grade Sn has also been produced from a quartz-mica stockwork. Both deposits are hosted in low...through high-grade Sn-quartz veins with thin pegmatites to shallower mineralised quartz- mica veins. The pegmatites...Li mica as well as petalite and ambylgonite in a quartz albite matrix. An overall model is proposed in...of mineralisation found at the major Rutongo deposit in Rwanda (Dewaele et al. 2010) but dissimilar to |  | 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) | | origin of peribatholitic Sn vein-type deposits in Rwanda J. Van Daele, N. Hulsbosch, S. Dewaele, M.-C. Boiron...origin of peribatholitic Sn vein-type deposits in Rwanda, Ore Geology Reviews (2018), doi: https://doi.org/10...origin of peribatholitic Sn vein-type deposits in Rwanda. Van Daele, J.a*, Hulsbosch, N.a, Dewaele, S.b...leucogranite mineralization, pegmatites, cassiterite, quartz veins, fluid mixing, geochemical modelling Abstract...Abstract The fluid sources of granite-related Sn-quartz vein deposits are commonly obscured by fluid mixing |  | | Journal (article/letter/editorial) | | belts, which extend over 700 km from the Katanga Province (Southeastern Congo) to Uganda, were formed by...KaragweAnkole Belt (KAB) to the northeast (Burundi, Rwanda, and Uganda). The KIB is separated from the KVB...Ā± 23 Ma [30]. Furthermore, extensive dating in Rwanda, based on Rb/Sr, was invalidated in [17] using...and 1956. N. Varlamoff expanded his fieldwork to Rwanda and Burundi between 1960 and 1969 in order to study...Gatumba mine in Central Rwanda [4,54,57]. Detailed studies in this district provide much useful information |  | | Journal (article/letter/editorial) | | Accepted Manuscript Vein-type Tungsten Deposits in Rwanda, Rutsiro area of the Karagwe-Ankole Belt, Central...A. Piestrzynski, Vein-type Tungsten Deposits in Rwanda, Rutsiro area of the Karagwe-Ankole Belt, Central...journal pertain. Vein-type Tungsten Deposits in Rwanda, Rutsiro area of the KaragweAnkole Belt, Central...Ltd., KG 624 ST, Bodifa House 5th floor, Kigali, Rwanda b AGH University of Science and Technology, 30-059...that the mineralised veins are mostly composed of quartz and ferberite. The ore microscopy studies of the |  | | Journal (article/letter/editorial) | | interpretation of aeroā magnetic data in Western Rwanda Jean d'Amour Uwiduhaye, Jean Claude Ngaruye, Hakim...interpretation of aeromagnetic data in Western Rwanda, Ore Geology Reviews (2020), doi: https://doi.org/10...interpretation of aeromagnetic data in Western Rwanda Jean dāAmour UWIDUHAYE1, Jean Claude NGARUYE1 and... Petroleum and Gas Board, P.O. Box 937 Kigali, Rwanda E-mail address: damouru@gmail.com / jean.uwiduhaye@rmb...Mineral resources take a leading economic role in Rwanda where geological structures play a key role in |  | | Journal (article/letter/editorial) | | of peribatholitic W quartz veins: Evidence from the Karagwe-Ankole Belt (Rwanda) Niels Hulsbosch a,ā...Ta and Sn) mineralisation in metasedimenthosted quartz veins is often obscured by intense ļ¬uidārock interactions...tungsten-bearing quartz veins of the Nyakabingo deposit of the Karagwe-Ankole belt in Central Rwanda. The vein...controversial for peribatholitic tungsten-bearing quartz veins in metasediments, because magmatic source...studies cannot be ļ¬rmly based on the investigation of quartz vein systems only. An alternative approach is taken |  | | Book | | MINERALS& GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published...rutile crystals partially included in transparent quartz crystals, 3 cm - Philip Hitge specimen, Bruce Cairncross...East African resources 12 Burundi 13 Kenya 14 Rwanda 16 Tanzania 17 Uganda 20 Gemological properties...is not commonly known that neighbouring Uganda, Rwanda and Burundi are also sources of some interesting...the gem-quality tourmaline that can be found in Rwanda). Literature on the subject is limited; the previous |  | | Journal (article/letter/editorial) | | sulfosalts, cassiterite and gangue minerals as quartz, carbonates and barite. Intergrowth and mutual...Hg (Spain) (FRG) (English (Roumania), Lake District) Sin Loa (Mexico) (Italy) Kilkivan (Queensland)...r o m these relationships the equilibrium Lake District) with +15.5O/oo and bisfractionation temperature...granite-contact aureole i06 I/T(K) 2 = [_1.20Ā±0.07]x (Rwanda). ] These extreme data deviate from sulfur data...HH Guanajuato 49 SI 79044 Sin Loa, Rosario District (Mexico) E1 Teniente Bi2S 3 - 4.2 ccp - 3 |  | Dewaele, S., De Clercq, F., Hulsbosch, N., Piessens, K., Boyce, A., Burgess, R., Muchez, Ph. (2016) Genesis of the vein-type tungsten mineralization at Nyakabingo (Rwanda) in the KaragweāAnkole belt, Central Africa. Mineralium Deposita, 51 (2) 283-307 doi:10.1007/s00126-015-0608-x | Journal (article/letter/editorial) | | vein-type tungsten mineralization at Nyakabingo (Rwanda) in the KaragweāAnkole belt, Central Africa S....deposit at Nyakabingo in the central Tungsten belt of Rwanda is located in the eastern flank of the complex...types of W-mineralized quartz veins have been observed: beddingparallel and quartz veins that are at high...minerals occur late in the evolution of the massive quartz veins, sometimes even in fractures that crosscut...trapping temperatures between 247 and 344 Ā°C. The quartz veins have been crosscut by sulfide-rich veins |  | Loun, Jan, NovĆ”k, Milan, CempĆrek, Jan, Å koda, Radek, VaÅ”inovĆ” GaliovĆ”, Michaela, ProkeÅ”, LubomĆr, Dosbaba, Marek, ÄopjakovĆ”, 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) | | Kibara belt unit, Numbi mining area, South Kivu province of the Democratic Republic of the Congo. Two examined...over a distance of ca. 1300 km from SW Uganda via Rwanda and Burundi into the Katanga region of the DRC...and hydrothermal quartz veins; wolframite is restricted solely to hydrothermal quartz veins (Dewaele et...of the pegmatite are represented mainly by quartz (quartz core) with less common muscovite, blue and...the non-weathered relics of the pegmatite. Quartz (quartz core) is dominant; muscovite is less common |  | | Report (issue) | | earthquake and associated tsunami that struck Northern Honshu, Japan, on March 11, 2011. The earthquate...some perspectives on supply chain disruption. Northern Honshu is home to a large number of significant...a single titanium dioxide plant. The plant in Northern Honshu, however, was the sole supplier of black...percent to 706 metric tons (t) from 660 t in 2010. Rwanda accounted for 27 percent of total mine production...Production of Mined Tantalum Minerals Brazil and Rwanda, which were the leading producers of tantalum ore |  | 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) | | Processes of the Sn-W Granites in the Maniema Province of the Kibara Belt (KIB), Democratic Republic...Processes of the Sn-W Granites in the Maniema Province of the Kibara Belt (KIB), Democratic Republic...Abstract: The Kibara belt (KIB) in the Maniema province hosts orebodies bearing cassiterite-wolframite...Mesoproterozoic (1094ā755 Ma) granites and Sn-W bearing quartz veins that cut through metasedimentary country...muscovite-quartz (Ā±topaz-fluorite-tourmaline) occur in the granites, and muscovite-sericite-quartz occurs |  | Tack, L., Wingate, M.T.D., De Waele, B., Meert, J., Belousova, E., Griffin, B., Tahon, A., Fernandez-Alonso, M. (2010) The 1375Ma āKibaran eventā 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) | | the SW, through Katanga and Kivu-Maniema (DRC), Rwanda and Burundi, up to SW Uganda and NW Tanzania in...Central African SnāNbāTaāW and Au metallogenic province, which was formed by the c. 970 Ma emplacement...associated mineralisation hosted in peg- matites and/or quartz veins (Cahen et al., 1984; Ikingura et al., 1992;...rocks and subordinate maļ¬c rocks (Fig. 3). In W Rwanda, preliminary data suggest that the WD is underlain...(KAB) 3.1. Palaeoproterozoic basement In the WD of Rwanda, Fernandez-Alonso and Theunissen (1998) were able |  | Amuda, Abdulgafar Kayode, Li, Shuang, Yang, Xiaoyong, Cao, Jingya, Faisal, Mohamed (2022) Genetic Association between Granites and Mineralization at the Gindi Akwati CassiteriteāSulfide Deposit, North-Central Nigeria: Insights from Mineralogy, Fluid Inclusions, and Sulfur Isotopes. Minerals, 12 (6) 761 doi:10.3390/min12060761 | Journal (article/letter/editorial) | | cassiteriteāsulfide mineralization occurs within quartz veins and greisenized Precambrian Older Granite...Cu) locally within the greisenized granites and quartz veins. The redox potential of the ores probably...sulfides at the surface. The alteration mineralogy (quartz-, topaz-, lepidolite-, and fluorite-bearing assemblages)...mineralization potential in granitic plutons [5]. The tin province of Nigeria is a classic example of recurrent tin...and sulfides to concentrate and precipitate in quartz veins and greisenized granites. 2. Geological Background |  | Hulsbosch, Niels, Hertogen, Jan, Dewaele, Stijn, AndrĆ©, Luc, Muchez, Philippe (2014) Alkali metal and rare earth element evolution of rock-forming minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt fractionation in the regional zonation of pegmatite groups. Geochimica et Cosmochimica Acta, 132. 349-374 doi:10.1016/j.gca.2014.02.006 | Journal (article/letter/editorial) | | rock-forming minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt fractionation...pegmatite zonation. The Gatumba pegmatite ļ¬eld (Rwanda, Central Africa) is chosen as case study area because...well-developed regional zonation in the Gatumba area (Rwanda, Central Africa). Feldspar, mica and tourmaline...in Table 1), i.e. the so-called G4-generation in Rwanda (former terminology of GeĢrards and Ledent, 1970)...and Sn-W hydrothermal quartz veins have been observed at several locations in Rwanda and in the neighbouring |  | | Journal (volume) | | Precambrian Gabbro- anorthosite Complexes, Tete Province, Mozambique: M. W. C. Barr and M. A. Brown .....Vail ............. 161 Ductile Shear Zones in the Northern Red Sea Hills, Sudan and their Implication for...Geological Mapping and Mineral Exploration in Northern Sudan using Satellite Remote Sensing: P. S. Griffiths...Discussion with Reference to the Niger-Nigerian Province: J . Kinnaird and P. Bowden . . . . . . . . ....Geochemical Characteristics of the Nigerian Anorogenic Province: R. A. Batchelor . . . . . . . . . . . . . . |  | Fosso Tchunte, Periclex Martial, Tchameni, Rigobert, AndrĆ©-Mayer, Anne-Sylvie, Dakoure, Hilaire Somtebda, Turlin, FranƧois, 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) | | Syn-Tectonic Pan-African Mayo Salah Leucogranite (Northern Cameroon): Constraints from Nb-Ta Oxide Mineralogy...pluton provides evidence for the presence of RMG in Northern Cameroon of CAFB, and its temporal association...Zimbabwe Craton. 1.4 Kaapvaal Craton. 2.1 Birimian Province. 2.2 Kibalian in North-Eastern 1.2 Congo Craton...Zimbabwe Craton. 1.4 Kaapvaal Craton. 2.1 Birimian Province. 2.2 Kibalian of North-Eastern Democratic Republic...Eastern Desert. 4.2 Adola Belt. 4.3 Alto Ligonha Province. 4.4 Damara Belt. 4.5 Older Granites 3.3 Orange |  | | Book (volume) | | the Congo and of the tvvo small adjoining states, Rwanda and B urundi. has been studied in great detail...Besairie . . 133 The P RECA1\1BRIAN OF THE CONGO, RWANDA, AND BURUNDI by L. Cahen and J . Lepersonne 143...intercalated traps. He chose the name " Dharwar" from the district (no,v- in 1\1:ysore State) in which he first recognized...research 011 the Precam brian rocks occurring in the northern parts of Peninsular India. As early as 1893, R...were supposed to represent crushed vein quartz, felsite, or quartz porphyry ; the limestones were considered |  | Melcher, Frank, Graupner, Torsten, GƤbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĆ¼r, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumā(niobiumātin) mineralisation in African pegmatites and rare metal granites: Constraints from TaāNb oxide mineralogy, geochemistry and UāPb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | 2. North-eastern DRC (Ubendian, Orientale and northern North Kivu) D 4.3. Neoproterozoic (1000-542...data 4.4.2.2. Mineralogy 4.4.3. Alto-Ligonha Province (northern Mozambique) 4.4.3.1. Radiometric data 4.4...Pegmatites of Ethiopia and Somalia 5.4.3. Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4...columbite-tantalite is typical of the Alto Ligonha Province (Mozambique), CE P the Arabian-Nubian Shield...countries (Democratic Republic CE P of the Congo, Rwanda, Burundi, and Uganda) have an almost 100-year-long |  | | Journal (issue) | | 520-527 Tanakamiyama, a classic Japanese pegmatite district 530-542 The Joaquin Folch Girona mineral collection... Barcelona, Spain 544-550 Shattuckite, Kunene District, Kaokoveld, Namibia 557-558 Collecting at Hallelujah...baryte in the Cavanacaw Gold mine, County Tyrone, Northern Ireland ļ· LITHORAMA 37(2), 02.10 1-5 Le diamant...d'hĆ©matite et d'ilmenite 72-75 Les cristaux de quartz pseudocubiques de la grĆØve de Porsguen en Plougastel-Daoulas...DES MICROMONTEURS # 105, 06.09 7 Rose and blue quartz 28-31 The geology of Charles Darwin (part 1) 44-46 |
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