 | | Journal (article/letter/editorial) | | Kibaran orogenic belt extending lrom Uganda. through Rwanda and Kivu. Maniema and Shaba provinces o l Zaire...belt. Another characteristic. lithiumbearing pegmatite procince is lound in the basement rocks o f Zimbabwe...Cassiterite 1. Introduction Although the major granite pegmatite regions of Africa have been known for a long time...demand. The present study reviews the principal pegmatite regions in Africa, where extensive mining of minerals...paid t o the mineralogy and geochemistry of the pegmatite deposits, and in particular t o tin and tantalum |  | Hatert, FrĂ©dĂ©ric, LefĂšvre, Pierre, Fransolet, AndrĂ©-Mathieu, Spirlet, Marie-Rose, Rebbouh, Leila, Fontan, François, Keller, Paul (2005) Ferrorosemaryite, NaFe2+Fe3+Al(PO4)3, a new phosphate mineral from the Rubindi pegmatite, Rwanda. European Journal of Mineralogy, 17 (5) 749-759 doi:10.1127/0935-1221/2005/0017-0749 | Journal (article/letter/editorial) | | a new phosphate mineral from the Rubindi pegmatite, Rwanda FRĂDĂRIC HATERT1,*, PIERRE LEFĂVRE1, ANDRĂ-MATHIEU...is a new mineral species from the Rubindi pegmatite, Rwanda. It occurs as large idiomorphic grains reaching...Rubindi pegmatite, Rwanda. Introduction Among the four valid type-minerals reported in Rwanda, three...three were described in the Buranga pegmatite, which is host to over hundred of other mineral species (Daltry... More than half of the recorded minerals from Buranga are phosphates, of which two compositional groups |  | | Report (issue) | | = 7.23(1) Z=4 X-ray Powder Pattern: Buranga pegmatite, Rwanda. (ICDD 41-1450). 3.059 (100), 3.104(84)...2.577 (40), 4.32 (33) Chemistry: (1) Buranga pegmatite, Rwanda; an analysis was not published - based...mineralization in a lithium-bearing granite pegmatite. Association: Amblygonite, lazulite-scorzalite, augelite, brazilianite...quartz. Distribution: Name: In the Buranga pegmatite, near Gatumba, Rwanda. Honoring Antonio Bertossa, Director...Director of the Geological Survey of Rwanda. Type Material: Royal Museum of Central Africa, Tervuren |  | | Report (issue) | | USA); amblygonite, lazulite-scorzalite, augelite, bertossaite, apatite (Buranga pegmatite, Rwanda). Distribution:...Brazil, from the CoÌrrego Frio and other nearby pegmatite mines, Divino das Laranjeiras, near LinoÌpolis...Newry, Oxford Co., Maine; from the White Picacho district, Maricopa and Yavapai Co., Arizona. In the Big...Yukon Territory, Canada. From the Buranga pegmatite, near Gatumba, Rwanda. At MillstaÌtter SeenruÌcken, Carinthia |  | | Report (issue) | | 9 Fe0.9 Mg0.2 )ÎŁ=2.0 (PO4 )3 (OH)3 . (2) Buranga mine, Rwanda; average of two analyses, corresponding...late stage reaction product of triphylite and amblygonite in complex granite pegmatites. Association: Palermoite...burangaite, trolleite, apatite, quartz (Buranga mine, Rwanda). Distribution: From the Palermo #1 mine...Co., New Hampshire, USA. At the Buranga pegmatite, near Gatumba, Rwanda. In the VaÌstanaÌ mine, near NaÌsum...(1899â1967), Swedish-American student of New England pegmatite minerals, Boston, Massachusetts, USA, who collected |  | | Report (issue) | | 70 CaO 0.08 F Li2 O H2 O+ 9.52 10.17 (1) Tanco pegmatite, Canada; corresponds (2) LiAl(PO4 )(OH, F) with...(OH)0.85 F0.11 . Forms a series with amblygonite. Amblygonite group. A late primary and secondary mineral...VarutraÌsk pegmatite, 15 km northwest of SkellefteaÌ, VaÌsterbotten, Sweden. From the Tanco pegmatite, Bernic...elsewhere in Maine; in the Midnight Owl pegmatite, White Picacho district, Maricopa Co., Arizona; in South Dakota...places in Minas Gerais. In the Buranga pegmatite, near Gatumba, Rwanda. Name: For the locality, Montebras |  | | Journal (article/letter/editorial) | | bertossaite {CaLi2[Al4(PO4)4(OH,F)4]} from the Buranga pegmatite, Rwanda, was investigated by single-crystal X-ray...crystal structure, infrared spectroscopy, Buranga pegmatite, Rwanda. Sommaire Un Ă©chantillon de bertossaĂŻte...{CaLi2[Al4(PO4)4(OH,F)4]} provenant de la pegmatite de Buranga, Rwanda, a Ă©tĂ© Ă©tudiĂ© par diffraction des rayons...cristalline, spectroscopie infrarouge, pegmatite de Buranga, Rwanda. Introduction Bertossaite, CaLi2[Al4(PO4)4(OH...and von Knorring & Mrose (1966) in the Buranga pegmatite, Rwanda, in association with augelite [Al2(PO4) |  | 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) | | during progressive evolution of the melt in a pegmatite body (either Nb ? Ta or Fe ? Mn fractionation...melt. In general, CGM from each individual Ta-ore province are characterized by a predominance of one type...mineral-melt partitioning during crystallization of the pegmatite body and by secondary hydrothermal or weathering...causing addition, loss or redistribution of REE. Pegmatite bodies may contain up to several generations of...provide constraints on the genesis of rare-element pegmatite systems. Furthermore, it may be used as a valuable |  | | Journal (article/letter/editorial) | | 613 SHORT COMMUNICATIONS Berlinite from Rwanda THE occurrence of berlinite at Westans iron mine, near...Belgium of material from the Buranga pegmatite, in the Katumba region of Rwanda, show that berlinite forms...suite of phosphate minerals developed in the pegmatite, a preliminary account of which has been given...thickness is bordered on one side by massive amblygonite with disseminated lazulite and on the other by...muscovite-apatite assemblage. At the contact of the amblygonite and the berlinite, a micropegmatitic intergrowth |  | | Journal (article/letter/editorial) | | itself scattered in a mineral of the montebrasiteâamblygonite solid-solution series. âNatromontebrasiteâ, originally...thus be considered as a mixture of an OH-rich amblygonite and lacroixite, with subordinate amounts of wardite... Keywords: ânatromontebrasiteâ, lacroixite, amblygonite, montebrasite, Canon City, Colorado. Sommaire...minĂ©ral de la sĂ©rie isomorphe montebrasite â amblygonite. La ânatromontebrasiteâ, initialement dĂ©crite...Mots-clĂ©s : ânatromontebrasiteâ, lacroixite, amblygonite, montebrasite, Canon City, Colorado. Introduction |  | | Journal (article/letter/editorial) | | Mineralization Kiharan Proterozoic Central Africa Pegmatite 1. Introduction The middle Proterozoic Kibaran...southwest, through Zaire, Burundi, Tanzania, and Rwanda to southwest Uganda in the north northeast. Its...Rift and a northeastern province covering Burundi, Rwanda, the west lake district of Tanzania, and southwest...Cumulative cassiterite production in the northeastern province, for example, may be estimated at approximately...No-Nyarnulilo W; Rh-Ruhiza W. Rwanda: B-Bugarama W; Bu-Buranga pegmatite; Mi-Miyovc Au; Bi-Bisesero Au; |  | | Report (issue) | | )(OH). Mineral Group: Occurrence: pegmatites. Amblygonite group. A secondary oxidation product of earlier...Sapucaia pegmatite mine, about 50 km east-southeast of Governador Valadares, and the EÌnio pegmatite mine...In the Buranga pegmatite, Gatumba district, Rwanda. In Namibia, from the Tsaobismund pegmatite, 60 km...the Sandamap pegmatite, west of Usakos. From Jebilet, Morocco. In the Mangualde pegmatite, near Mesquitela...crystallography of tavorite from the Tip Top pegmatite, Custer, South Dakota. Powder Diffraction, 3(2) |  | | Journal (article/letter/editorial) | | granitesâ, contain minerals deposits such as beryl, amblygonite, spodumene, apatite, and tourmaline. With respect...belts, which extend over 700 km from the Katanga Province (Southeastern Congo) to Uganda, were formed by...by the Mesoproterozoic collision of the Western Congo Craton, with the Eastern Tanzanian, Bangweulu, and...KaragweAnkole Belt (KAB) to the northeast (Burundi, Rwanda, and Uganda). The KIB is separated from the KVB...± 23 Ma [30]. Furthermore, extensive dating in Rwanda, based on Rb/Sr, was invalidated in [17] using |  | | Journal (article/letter/editorial) | | the JaÌlama batholith in the NavasfrıÌas Sn-W District, Salamanca, Spain T. LLORENS* AND M. C. MORO...crystallized to form a group of intra-granitic pegmatite dykes, which are hosted by its outermost facies...fractures to form the Cruz del Rayo field of pegmatite dykes, which are hosted by pre-Ordovician low-grade...and the amblygonitemontebrasite series. A strong albitization of the granitic and pegmatite rocks led...interaction. Introduction SECONDARY granite and pegmatite phosphates have been extensively documented (e |  | | Journal (article/letter/editorial) | | (mainly Rwanda and the DR Congo), around the Kenticha mine (Ethiopia) and in the Alto Ligonha Province (Mozambique)...columbite-tantalite is typical of the Alto Ligonha Province (Mozambique), the Arabian-Nubian Shield (Egypt...1992; ÄernĂœ et al., 2005). The provenance of pegmatite magmas remains poorly understood. Based on a study...afïŹliation and rare-element signature of the granite-pegmatite systemsâ. Peraluminous granites and associated...deïŹned and include, in order of relative importance, Rwanda, the Democratic Republic of the Congo (DRC), Mozambique |  | Galliski, M. A., Cerny, P., Marquez-Zavalia, M. F., Chapman, R. (2012) An association of secondary Al-Li-Be-Ca-Sr phosphates in the San Elias pegmatite, San Luis, Argentina. The Canadian Mineralogist, 50 (4) 933-942 doi:10.3749/canmin.50.4.933 | Journal (article/letter/editorial) | | SECONDARY AlâLiâBeâCaâSr PHOSPHATES IN THE SAN ELĂAS PEGMATITE, SAN LUIS, ARGENTINA Miguel Ă. GALLISKI§ IANIGLA...phosphates from the Li-bearing, rare-element San ElĂas pegmatite in the Eastern Pampean ranges of Argentina shows...hydroxylapatite formed after PâT equilibration between the pegmatite and its host rock along the path of metamorphic... Sr and minor S from the host rocks into the pegmatite (at about <300°C); (iii) at a still lower T, the...previous alteration stages. Keywords: granitic pegmatite, phosphate alteration, montebrasite, hydroxylherderite |  | | Journal (issue) | | Richard A. Bideaux M ineralogist feature articles Pegmatite Phosphates: Descriptive Mineralogy and Crystal...Supply Co. $65.00. The Mineralogical Record Pegmatite Phosphates: Descriptive Mineralogy and Crystal...phosphate minerals, which occur at all stages of pegmatite genesis, are among the most extensive of any mineral...interest in them than mineralogists. No doubt, the pegmatite phosphates prove most reward ing collecting material...collectors overlook them so that many of the classical pegmatite localities, presently abandoned, still may yield |  | | Journal (article/letter/editorial) | | pegmatites of Rhodesia and Uganda are members of the amblygonite-montebrasite series with a 1.5921.615, ~, 1.612-1... Amblyyonite-montebras~te. Small amounts of amblygonite-montebrasite are known in about a dozen pegmatites...(LiA1POaOH) content from 50 to 100 ~ In Rhodesia, amblygonite-montebrasite is accompanied by other lithium...lithium minerals except in the Mterikati pegmatite. Lithiophorite is the only other lithium mineral occurring...the Dam Site pegmatite. The refractive indices of montebrasite from the Benson 2 pegmatite (no. 13, table |  | | Journal (article/letter/editorial) | | Na-in-triphylite geothermometer: applications to natural pegmatite phosphates Frederic Hatert âą Luisa Ottolini Peter...assemblages from the Kibingo (Rwanda), Hagendorf-SuÌd (Germany), and Buranga (Rwanda) pegmatites, respectively...ferrisicklerite [Li1-x(Fe3?,Mn2?)PO4] from the Buranga pegmatite, Rwanda, without any replacement texture. This...HeÌreng (1989) re-examined the samples from the Buranga pegmatite and observed three different primary assemblages:...Hagendorf-SuÌd, Germany; alluaudite ? fillowite in Rusororo, Rwanda, and Kabira, Uganda; alluaudite ? ferrisicklerite |  | | Journal (article/letter/editorial) | | between 400 and 600C, during the first stages of pegmatite evolution [huÌhnerkobelite is not a valid species...alluaudite and ferrisicklerite from the Buranga pegmatite, Rwanda, without any replacement texture. This...HeÌreng (1989) re-examined the samples from the Buranga pegmatite, and observed three different primary parageneses:...large size of the alluaudite grains from the Buranga pegmatite, which can reach 1 cm in length, is also a...Hagendorf-SuÌd, Germany; alluaudite + fillowite in Rusororo, Rwanda, and Kabira, Uganda; alluaudite + ferrisicklerite |  | Galliski, M. A., Oyarzabal, J. C., Marquez-Zavalia, M. F., Chapman, R. (2009) THE ASSOCIATION QINGHEIITE - BEUSITE - LITHIOPHILITE IN THE SANTA ANA PEGMATITE, SAN LUIS, ARGENTINA. The Canadian Mineralogist, 47 (5) 1213-1223 doi:10.3749/canmin.47.5.1213 | Journal (article/letter/editorial) | | QINGHEIITE â BEUSITE â LITHIOPHILITE IN THE SANTA ANA PEGMATITE, SAN LUIS, ARGENTINA Miguel Angel GALLISKI §...Ana mine (32°53â32â S, 65°55â43â W), San Luis province, Argentina, in a beryl type, berylâcolumbiteâphosphate...berylâcolumbiteâphosphate subtype of rare-element pegmatite, and in the closely related La Empleada dike. At Santa Ana...crystallization of the border and wall zones of the pegmatite. The exsolution of this precursor led to the formation...beusite, lithiophilite, exsolution, granitic pegmatite, Santa Ana, Sierras Pampeanas, Argentina. Sommaire |  | | Journal (article/letter/editorial) | | their unusual mineral species. The Palermo No. 1 pegmatite is located in the White Moun tains of central...North Groton. Its surround ings and even the pegmatite itself are unpretentious. The min erals of greatest...issue of Rocks and Minerals entitled " T h e Pegmatite Minerals of the Palermo Quarry." Verrow's mineral...served to reveal the truly rich mineralogy of this pegmatite. By the end of the 1943 mining season, General...working primarily on the phosphates of the Palermo pegmatite. In May o f 1974, the mineral rights to the quarry |  | Hien-Dinh, Thi Thu, Dao, Duy Anh, Tran, Tam, Wahl, Michael, Stein, Eckardt, GierĂ©, Reto (2017) Lithium-rich albiteâtopazâlepidolite granite from Central Vietnam: a mineralogical and geochemical characterization. European Journal of Mineralogy, 29 (1) 35-52 doi:10.1127/ejm/2017/0029-2581 | Journal (article/letter/editorial) | | discovered in the La Vi mining district, located in Quang Ngai Province, Central Vietnam. The Li-rich...muscovite, and lepidolite, with minor amounts of amblygoniteâmontebrasite, montebrasite, herderite, ïŹ ïŹuorapatite...and goyazite. Electron microprobe analyses of amblygonite revealed high Na2O concentrations, but these...topazâ topaz âlepidolite granite; lepidolite; amblygonite; goyazite; herderite; La Vi; Quang Ngai; Vietnam...lepidolite, K(Li,Al)3(Si,Al)4O10(F,OH)2; and amblygonite, LiAlPO4F. The goal of this paper is to report |  | | Journal (article/letter/editorial) | | No. 1 mines, also in Grafton County; and the pegmatite at the G. E. Smith mine near Newport, Sullivan...The site was correctly ascribed to the Moscovita district of Conselheiro Pena Township. Conselheiro Pena...and Cdrrego Frio became part of the Lin6polis district of Divino das Laranjeiras Township. Cassedanne...veinlets and small subhedral crystals coating amblygonite at Alto Patrimonio, Paraiba, and at Boqueirao...odd paleocave occurrence at Anniesfontein, Cape Province, South Africa; hydrothermal veins in the Colette |  | 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) | | 3.2. Kamativi Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa)...Radiometric data 4.4.2.2. Mineralogy 4.4.3. Alto-Ligonha Province (northern Mozambique) 4.4.3.1. Radiometric data...3.2. Kamativi Schist Belt 5.3.3. Orange River Pegmatite Belt 5.4. Late Neoproterozoic to early Paleozoic...Pegmatites of Ethiopia and Somalia 5.4.3. Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4...presented for 13 rare-element granite NU and pegmatite districts in Africa, covering Archean, Paleoproterozoic |
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Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda