 | 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) | | of rock-forming minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt...of regional pegmatite zonation. The Gatumba pegmatite ļ¬eld (Rwanda, Central Africa) is chosen as case...rare-element pegmatites (feldspars, muscovite and elbaite) show again more fractionated, heavy REE-depleted...well-developed regional zonation in the Gatumba area (Rwanda, Central Africa). Feldspar, mica and tourmaline...to the most fractionated pegmatite zones. The Gatumba pegmatite ļ¬eld is a ļ¬rst-class area to study granite-pegmatite |  | | Journal (article/letter/editorial) | | hydrothermal quartz veins. Many deposits in the province occur in siliciclastic metasedimentary, or metabasaltic...roof rocks above parental granites; mainly in its western part, the zone of mineralisation retracts into...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 |  | | Book | | MINERALS& GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published...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...of the five featured countries - Burundi, Kenya, Rwanda, Tanzania and Uganda - and introduces the reader |  | Hulsbosch, Niels, Boiron, Marie-Christine, Thomas, Rainer, Van Daele, Johanna, Dewaele, Stijn, Muchez, Philippe (2019) Evaluation of the petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages: Application of LA-ICP-QMS analyses and volume ratio calculations. Geochimica et Cosmochimica Acta, 244. 308-335 doi:10.1016/j.gca.2018.10.023 | Journal (article/letter/editorial) | | early-Neoproterozoic pegmatite dykes of the Gatumba-Gitarama field in Rwanda. Multiple dykes have been studied...constituent bulk rock and rock-forming minerals of the Gatumba-Gitarama pegmatites. A comparison of the alkali...early-Neoproterozoic GatumbaGitarama pegmatite field of Rwanda have been selected for this research. Tourmaline...granitic-textured, muscovite ā rareelement pegmatites of the Gatumba-Gitarama field (Hulsbosch et al., 2017). These...belong to the early-Neoproterozoic Gatumba-Gitarama pegmatite field in Rwanda (Hulsbosch et al., 2014). Muscovite |  | | Journal (article/letter/editorial) | | quartz veins: Evidence from the Karagwe-Ankole Belt (Rwanda) Niels Hulsbosch a,ā, Marie-Christine Boiron b...Nyakabingo deposit of the Karagwe-Ankole belt in Central Rwanda. The vein system (992 Ā± 2 Ma) is spatiotemporal...leucograniteāpegmatite suite (986 Ā± 10 Ma to 975 Ā± 8 Ma) of the GatumbaāGitarama area which culminated in NbāTaāSn mineralisation...muscovite of less-diļ¬erentiated pegmatite zones of the GatumbaāGitarama area. Pegmatitic muscovite records a decrease...columbiteātantalite mineralised pegmatites of the GatumbaāGitarama area, emphasises the eļ¬ciency of ļ¬uid |  | Hulsbosch, Niels, Thomas, Rainer, Boiron, Marie-Christine, Dewaele, Stijn, Muchez, Philippe (2017) Direct Observation of Boro-Aluminosilicate Melt Compositions: Insights From Raman Spectroscopy of Melt Inclusions In Pegmatitic Tourmaline of the Gatumba-Gitarama Area (Rwanda) The Canadian Mineralogist, 55 (3) 377-397 doi:10.3749/canmin.1600093 | Journal (article/letter/editorial) | | INCLUSIONS IN PEGMATITIC TOURMALINE OF THE GATUMBA-GITARAMA AREA (RWANDA) NIELS HULSBOSCHĀ§ Geodynamics and Geoļ¬uids...assemblages of common pegmatites of the Gatumba-Gitarama area (Rwanda). The melt inclusions show a main mineralogy...have been sampled from the Gatumba-Gitarama pegmatite ļ¬eld in Rwanda. The Gatumba-Gitarama ļ¬eld is a type... GEOLOGY OF THE GATUMBA-GITARAMA PEGMATITES, RWANDA The rocks of the Gatumba-Gitarama area have been...al. 2012, Debruyne et al. 2015). The Gitarama-Gatumba pegmatite ļ¬eld is a well-developed example of a |  | 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...Rwamagana-Musha-Ntunga pegmatite-quartz vein field in East Rwanda has been evaluated by the following four methods:...American Cordillera, 2: Bolivian province, 3: Iberian ā Panasqueira province, 4: French Massif Central, 5: |  | | Report (issue) | | pegmatites. Association: Lepidolite, quartz, elbaite, mica (Eight Mile Park, Colorado, USA). Distribution:...Minas Gerais. At the Rusororo pegmatite, Gatumba district, Rwanda. Name: For its content of sodium, natrium |  | | Journal (article/letter/editorial) | | cassiterite mineralisation of the Gatumba pegmatite dyke system (NW Rwanda) Niels Hulsbosch, Philippe Muchez...cassiterite mineralisation of the Gatumba pegmatite dyke system (NW Rwanda), LITHOS, https://doi.org/10.1016/j...of phosphorus- and boron-rich pegmatites in NW Rwanda has been investigated using petrography, fluid...microspectroscopy and LA-ICP-MS). The Gatumba dyke system (GDS) in Rwanda has been selected for this study...differentiated rare-element pegmatites in the Gatumba-Gitarama field. Petrography identified a well-developed |  | | Journal (issue) | | rare-element class pegmatites in the Borborema Province in NE-Brazil?...................................primary and secondary (metasomatic) tourmaline from elbaite-subtype pegmatites PikĆ”rec and ReÄice: Moldanubian...miarolitic granite of Cuasso al Monte, Varese province, (Southern Apls, Italy)ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦41...pegmatitic granite dykes in the central Grenville Provinceā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦...Rwamagana-Musha-Ntunga pegmatite-quartz vein field (East Rwanda): identification of mixing processes betwen magmatic-hydrothermal |  | Atencio, D., Coutinho, J. M.V., Mascarenhas, Y. P., Ellena, J. A. (2006) Matioliite, the Mg-analog of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences. American Mineralogist, 91 (11) 1932-1936 doi:10.2138/am.2006.2233 | Journal (article/letter/editorial) | | locality (Buranga pegmatite, near Gatumba, Giseney province, Rwanda), studied by von Knorring et al. (1977)...(1997), and HĆ„lsjƶberg, near EkshƤrad, VƤrmland province, Sweden (Ek and Nysten 1990). 1932 ATENCIO...quartz, albite, microcline, muscovite, beryl, elbaite, schorl, almandine, cassiterite, columbite, tantalite...(1977) Burangaite, a new phosphate mineral from Rwanda. Bulletin of Geological Society of Finland, 49 |  | Demartis, Manuel, Melgarejo, Joan Carles, Colombo, Fernando, Alfonso, Pura, Coniglio, Jorge Enrique, Pinotti, Lucio Pedro, DāEramo, Fernando Javier (2014) EXTREME F ACTIVITIES IN LATE PEGMATITIC EVENTS AS A KEY FACTOR FOR LILE AND HFSE ENRICHMENT: THE ĆNGEL PEGMATITE, CENTRAL ARGENTINA. The Canadian Mineralogist, 52 (2) 247-269 doi:10.3749/canmin.52.2.247 | Journal (article/letter/editorial) | | associations of cleavelandite, quartz, Fe-rich elbaite (elbaite I), a second generation of muscovite (muscovite...association characterized by muscovite III, Fe-poor elbaite (elbaite II), Cs-micas, and U-rich hydroxykenomicrolite...the southeastern part of the Pampean Pegmatitic Province (Galliski 1994), in the southern Sierras de CĆ³rdoba...1c and d), near the village of Merlo (San Luis province). The Ćngel pegmatite is particularly known because...central portion of the replacement body. At the western contact, a narrow zone less than 1 m thick, showing |  | 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) | | 1.2. Mineralogy 4.3.2. Kamativi Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia...Radiometric data 4.4.2.2. Mineralogy 4.4.3. Alto-Ligonha Province (northern Mozambique) 4.4.3.1. Radiometric data...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...2009; Greenbushes and Wodgina D pegmatites, Western Australia, Partington et al., 1995; rare-metal |  | Zhou, Qifeng, Qin, Kezhang, Tang, Dongmei, Wang, Chunlong, Tian, Ye, Sakyi, Patrick Asamoah (2015) Mineralogy of the Koktokay No. 3 pegmatite, Altai, NW China: implications for evolution and meltāfluid processes of rare-metal pegmatites. European Journal of Mineralogy, 27 (3) 433-457 doi:10.1127/ejm/2015/0027-2443 | Journal (article/letter/editorial) | | amphibolite with minor amphibolitic rock in the western part. The metagabbro pluton belongs to the Keketuohai...assemblages of tourmaline. Moreover, in the mining district, there are three types of granites namely, biotite...compositions of apatite. Outside of the mining district, there are biotite granites and two-mica granites...2006). The stratigraphic sequence of the mining district mainly belongs to the Habahe group, which hosts...joints and fractures (Fig. 1). In the mining district exist other pegmatite dikes of different scales |  | BĆ¼ttner, Steffen H., Reid, Wesson, Glodny, Johannes, Wiedenbeck, Michael, Chuwa, Gerald, Moloto, Thapelo, Gucsik, Arnold (2016) Fluid sources in the TwangizaāNamoya Gold Belt (Democratic Republic of Congo): Evidence from tourmaline and fluid compositions, and from boron and RbāSr isotope systematics. Precambrian Research, 280. 161-178 doi:10.1016/j.precamres.2016.05.006 | Journal (article/letter/editorial) | | contrast, the pegmatitic tourmaline is schorlāelbaite dominated and largely Ca-free. The boron isotopic...Kivu; LT: Lake Tanganyika; LV: Lake Victoria; R: Rwanda, B: Burundi. 2015). Banro Corporation (www.banro...Kibara Belt that stretches from Uganda through Rwanda, Burundi and eastern DRC. Tack et al. (2010) and...2015) report similar pegmatite ages for the Gatumba area in Rwanda (966 Ā± 9; 975 Ā± 8 Ma) and somewhat older...(1024 Ā± 5 Ma) in the Kalima area in the Maniema province of eastern DRC. Melcher et al. (2015) provide |  | Wang, He, Gao, Hao, Zhang, Xiao-Yu, Yan, Qing-He, Xu, Yigang, Zhou, Kailin, Dong, Rui, Li, Pei (2020) Geology and geochronology of the super-large Bailongshan LiāRbā(Be) rare-metal pegmatite deposit, West Kunlun orogenic belt, NW China. Lithos, 360. 105449 doi:10.1016/j.lithos.2020.105449 | Journal (article/letter/editorial) | | were identified in it: an 8 Journal Pre-proof elbaiteāalbiteāmuscovite zone, a blocky albiteāquartz zone...Pre-proof tourmaline (2 vol.%), light- green elbaite (2 vol.%), muscovite (2 vol.%), montebrasite (1...bearing rn 10ā26. al pegmatites of the Gatumba area, Rwanda (Central Africa). J. Afr. Earth Sci. 61...mineralization of the Hagendorf-Pleystein pegmatite province, Germany: with special reference to laser ablation... Ding, D.G., Wang, D.X., Liu, W.X., 1996. The Western Kunlun Orogenic Belt and Basin (In Chinese). Geol |  | | Journal (article/letter/editorial) | | Li-rich minerals (spodumene and rarely petalite, elbaite-rossmanite, lepidolite), Cs-beryl variety morganite...class of Ginsburg ro (1984) and ÄernĆ½ (1991). Elbaite-rossmanite solid solutions, which are common gem-forming...eucryptite (Guttery, 2012). London (2011) proposed that elbaite and re spodumene share the same high-pressure...proximity to the gem-quality and perfect crystals of elbaite, beryl, spodumene, lepidolite, and other euhedral...Anorogenic Gross Spitzkoppe granite stock in central western Namibia; Part I, Petrology and geochemistry. American |  | Bosi, Ferdinando, Naitza, Stefano, Secchi, Francesco, Conte, Aida M., Cuccuru, Stefano, Andreozzi, Giovanni B., Skogby, Henrik, HĆ„lenius, Ulf (2019) Petrogenetic controls on the origin of tourmalinite veins from Mandrolisai igneous massif (central Sardinia, Italy): Insights from tourmaline crystal chemistry. Lithos, 342. 333-344 doi:10.1016/j.lithos.2019.05.042 | Journal (article/letter/editorial) | | leucogranitic magmas. Remarkably, SC along the western contacts with the low-grade metamorphics, granodiorite...Tourmaline occurrence is mainly documented in the western part of the Mandrolisai pluton, close to the i...xenoliths in tonalitic granodiorite close to the western contacts with the basement. Under the polarizing...in Li, as further supported by the absence of elbaite and other Li-bearing minerals in the pegmatitic...BUP8A_1). Brittle deformation may have involved the western contact of the pluton, producing a discrete, roughly |  | | Journal (article/letter/editorial) | | Cave, near Madura Motel (3 I~ 54' S, i27 ~ o' E), Western Australia. Formed from bat guano. Sp. gr. 2.23...Finland, 49, 33. Blue monoclinic prisms from Buranga, Rwanda, a 25-o9, b 5"o48, c I3"45 A, fl 1 IO'9 I~ space...Sheaves and rosettes of a white mineral from Gatumba, Buranga, Rwanda, are monoclinic, a 6"9o7, b 5-o95, c lO'764/~...distorted octahedra in the Mariposa mine, Terlingua district, Brewster Co., Texas, are cubic, a 9"5215 A, space... 1977. A.M. 62, 112I. The calcium analogue of elbaite occurs in the detrital solids of Antsirabe, Madagascar |  | Bosi, Ferdinando, Naitza, Stefano, Skogby, Henrik, Secchi, Francesco, Conte, Aida M., Cuccuru, Stefano, HĆ„lenius, Ulf, De La Rosa, Nathaly, Kristiansson, Per, Charlotta Nilsson, E.J., Ros, Linus, Andreozzi, Giovanni B. (2018) Late magmatic controls on the origin of schorlitic and foititic tourmalines from late-Variscan peraluminous granites of the Arbus pluton (SW Sardinia, Italy): Crystal-chemical study and petrological constraints. Lithos, 308. 395-411 doi:10.1016/j.lithos.2018.02.013 | Journal (article/letter/editorial) | | granitic melts, as supported by the absence of elbaite and other Liminerals in the Arbus pluton. Tourmaline-bearing...occurrences are located along the northern and western edges of the pluton, CE close to the contact...dikes crosscutting the country rocks along the western margin of the pluton (sample AP43); (e) pegmatitic...broadly crosscut the basement rocks along the western edge of the pluton for a length of several hundreds...reported by Burns et al. (1994) for Mn-bearing elbaite samples. The variation of from 2.027 Ć
to |  | Cao, Rui, Gao, Yongbao, Chen, Bin, Bagas, Leon, Yan, Shengchao, Huang, Chao, Zhao, Hui (2023) Pegmatite magmatic evolution and rare metal mineralization of the Dahongliutan pegmatite field, Western Kunlun Orogen: Constraints from the B isotopic composition and mineral-chemistry. International Geology Review, 65 (7) 1224-1242 doi:10.1080/00206814.2021.1899062 | Journal (article/letter/editorial) | | mineralization of the Dahongliutan pegmatite field, Western Kunlun Orogen: Constraints from the B isotopic...mineralization of the Dahongliutan pegmatite field, Western Kunlun Orogen: Constraints from the B isotopic...mineralization of the Dahongliutan pegmatite field, Western Kunlun Orogen: Constraints from the B isotopic...mineralization; b-isotope; mesozoic dahongliutan pegmatite; Western Kunlun Orogen Key Laboratory of Earth Exploration...the West Kunlun Orogen located in the Xinjiang Province of NW China (Figure 1). The deposit is in an economically |  | | Conference Proceedings (Volume) | | Southern Cross greenstone belt, Yilgarn Craton, Western Australia: midcrustal granite-related replacement...& Nigel J. Cook The Nihe iron deposit, Anhui Province, eastern China: skarn, IOCG or porphyritic iron...the ages of Baiyanghe Be-U deposit in Xinjiang province, northwest China ..............................through polycyclic orogeny: the example of the Litsa district, Russia Anne-Sylvie AndrƩ-Mayer, Michel Cuney...mantle-crustal ore-forming systems of the Pechenga ore district (Fennoscandian shield) ..................... |  | | Journal (article/letter/editorial) | | (St Just district); Dolcoath, Wheal Concord and Nangiles (Camborne-Redruth-St Day district), Wheal Charlotte...metal is considered as a potential by-product by Western United Mines, much more detailed investigations...Nkout deposit is part of an emerging iron ore province in West and Central Africa. It is an oxide facies...Exploration, Lumwana Mine, Mwinilunga Rd, Solwezi, NW Province, Zambia The recent development of a number of...are in a similar large multi-element geochemical province. Indeed all major Ni deposits in the Fennoscandian |  | | Book (edition) | | expressed in abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture)...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....the revolution in 1997. Its mineral rich Katanga province was renamed Shaba by Mobutu, and is now the Katanga...Katanga administrative region again. The former Kivu province is now divided to three regions: INTRODUCTION...conditions in the gold-bearing "greenstone" in Abitibi province in northern Ontario and Quebec. Some genetic problems |  | | Book | | Colorado, doloresite, Dolores River in Colorado, elbaite, Island of Elba near Italy, fayalite, Fayal Island...Azores. gamagarite, Gamagara ridge, Postmasburg district, South Africa. garronite, Garron plateau area...Mountains, Soviet Union. inderite, Inder Lake, western Kazakhstan, Soviet Union. jarosite, Jaroso ravine...(Labrador Territory) and andalusite (Andalusia, a province of Spain). Several American county names are alleghanyite...Mull, Scotland. villamaninite, Villamamn, Leon Province, Spain. NAMES AFTER MINES AND MINERAL DEPOSITS |
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