 | | Journal (article/letter/editorial) | | Li-Mn-Fe phosphate minerals from the Buranga pegmatite, Rwanda A.-M. FRANSOLET Institut de Min6ralogie...Belgium S U M M A R Y. F r o m the Buranga pegmatite, Rwanda, t h r e e occurrences of eosphorite-childrenite...ferrisickleriteheterosite formation. IN the Buranga pegmatite, Rwanda, Von Knorring (I965) has mentioned the...granitic pegmatites; this research, based only on the Buranga mine example, tends to show that new indications... Such correlations cannot be proposed for the Buranga material because the number of investigated specimens |  | 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) | | 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 |  | | 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; |  | | Journal (article/letter/editorial) | | both within the belt and in foreland troughs. The western molasse and the whole belt were again orogenically...southwest, through Zaire, Burundi, Tanzania and Rwanda to southwestern Uganda in the NNE. Its overall...Rift and a northeastern province covering Burundi, Rwanda, the West Lake district of Tanzania and southwest...southwest Uganda. The northeastern province is the main subject of this paper (Fig. 2 ). Since the discovery...No---Nyamulilo W; Rh--Ruhiza W. Rwanda: B---Bugarama W; Bu--Buranga pegmatite; Mi--Miyove Au; G--Gifurwe W; |  | | Journal (article/letter/editorial) | | 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...and 1956. N. Varlamoff expanded his fieldwork to Rwanda and Burundi between 1960 and 1969 in order to study |  | 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 |  | Hatert, FrĂ©dĂ©ric Baijot, Philippo, Simon, Wouters, Johan (2010) Qingheiite-(Fe2+), Na2Fe2+MgAl(PO4)3, a new phosphate mineral from the Sebastiao Cristino pegmatite, Minas Gerais, Brazil. European Journal of Mineralogy, 22 (3) 459-467 doi:10.1127/0935-1221/2010/0022-2030 | Journal (article/letter/editorial) | | phosphate mineral from the SebastiaÌo Cristino pegmatite, Minas Gerais, Brazil FREÌDEÌRIC HATERT1,*, MAXIME...mineral species from the SebastiaÌo Cristino pegmatite, Minas Gerais, Brazil. It occurs as rims around...most important pegmatite provinces in the world, the Eastern Brazilian Pegmatite Province (EBPP). This...This province is located at the East side of the SaoÌ Francisco craton, mainly in the state of Minas Gerais...Gerais, among which 15 from the Conselheiro Pena district (GalileÌia, Divino das Laranjeiras, Mendes Pimentel |  | | 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...series. A strong albitization of the granitic and pegmatite rocks led to the replacement of the primary assemblage...interaction. Introduction SECONDARY granite and pegmatite phosphates have been extensively documented (e |  | Hulsbosch, Niels, Hertogen, Jan, Dewaele, Stijn, AndrĂ©, 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...fractionation in the regional zonation of pegmatite groups Niels Hulsbosch a,â, Jan Hertogen a, Stijn Dewaele...whole sequence of regional pegmatite zonation. The Gatumba pegmatite ïŹeld (Rwanda, Central Africa) is chosen...diïŹerentiation process in the development of regional pegmatite zonation. Moreover (1) it demonstrates the continuity...process from biotite pegmatites to rare-element pegmatite and indicates a genetic link among them; and (2) |  | 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) | | hydrothermal mineral in the Gentil mine granite pegmatite, Mendes Pimentel Co., Minas Gerais, Brazil. Some...are the type locality (Buranga pegmatite, near Gatumba, Giseney province, Rwanda), studied by von Knorring...(1997), and HĂ„lsjöberg, near EkshĂ€rad, VĂ€rmland province, Sweden (Ek and Nysten 1990). 1932 ATENCIO...mineral in vugs from the Gentil mine granitic pegmatite, Mendes Pimentel Co., Minas Gerais, Brazil. This...Other minerals found in the pegmatite include: quartz, albite, microcline, muscovite, beryl, elbaite, |  | | Journal (article/letter/editorial) | | eosphorite, siderite, albite, muscovite, quartz, and microcline. It also occurs as a sparse component of fracture...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...odd paleocave occurrence at Anniesfontein, Cape Province, South Africa; hydrothermal veins in the Colette |  | Hatert, FrĂ©dĂ©ric, Philippo, Simon, Ottolini, Luisa, Dal Bo, Fabrice, Scholz, Ricardo, Chaves, MĂĄrio L.S.C., Yang, Hexiong, Downs, Robert T., Menezes Filho, Luiz A.D. (2017) Wilancookite, (Ba, K, Na)8 (Ba, Li, [])6 Be24 P24 O96·32H2O, a new beryllophosphate with a zeolite framework. European Journal of Mineralogy, 29 (5) 923-930 doi:10.1127/ejm/2017/0029-2661 | Journal (article/letter/editorial) | | from the Lavra Ponte do PiauĂ complex granitic pegmatite, Minas Gerais, Brazil. It occurs as tiny dodecahedral...beryllophosphate; zeolite framework; crystal structure; pegmatite; Minas Gerais; Brazil. 35 1. Introduction 36...most important pegmatite provinces in the world, the Eastern Brazilian Pegmatite Province (EBPP). This...This province is located at the East side of the SaĂ” Francisco craton, mainly in the state of Minas Gerais...in the Lavra Ponte do PiauĂ complex granitic pegmatite. The mineral forms colourless tiny dodecahedral |  | | 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 |  | | Journal (article/letter/editorial) | | Anstru'cr Alluaudite is described from a Black Hills pegmatite. Alluaudite is monoclinic, probThe six stronger...in Table 3' INrnopucrrorq Alluaudite from a pegmatite near Chanteloube in west-central France was describedby...occurrencein the United States. At the Green pegmatite, 3 miles northeast of Pringle, South Dakota, near...in smooth curving contact with perthitic pink microcline; otherwise it was surrounded by albite-quart...Chanteloube, Haute Vienne, France, and the Buranga pegmatite (lat. 1"48' S., long. 29o40'E.) in Ruanda |  | | Journal (article/letter/editorial) | | GEOCHEMISTRY OF PHOSPHATES AND SILICATES IN THE SAPUCAIA PEGMATITE, MINAS GERAIS, BRAZIL: GENETIC IMPLICATIONS Maxime...The Sapucaia pegmatite is located in the well-known Eastern Brazilian Pegmatitic Province (EBPP), Minas...Minas Gerais, Brazil. Detailed mapping of the pegmatite body revealed five zones, showing distinct mineral...quartz core (Q). Phosphate masses found in the pegmatite contains two different assemblages: assemblage...geochemically primitive LCT-type pegmatite. The degree of differentiation of the pegmatite increases from the border |  | 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 |  | Baijot, Maxime, Hatert, FrĂ©dĂ©ric, Dal Bo, Fabrice, Philippo, Simon (2014) Mineralogy and petrography of phosphate mineral association from the JocĂŁo pegmatite, Minas Gerais, Brazil. The Canadian Mineralogist, 52 (2) 373-397 doi:10.3749/canmin.52.2.373 | Journal (article/letter/editorial) | | PHOSPHATE MINERAL ASSOCIATIONS FROM THE JOCĂO PEGMATITE, MINAS GERAIS, BRAZIL Maxime BAIJOT, FrĂ©dĂ©ric...JocĂŁo pegmatite (or Cigana) is located in the well-known Eastern Brazilian Pegmatitic Province (EBPP)...mineral masses were collected from the dumps of the pegmatite: association I is composed of dendritic triphylite...genetic sequence, secondary phosphates, JocĂŁo pegmatite, Brazil § E-mail address: fhatert@ulg.ac.be...most important pegmatite provinces in the world, the Eastern Brazilian Pegmatite Province (EBPP), is located |  | | Book | | RELATIONSHIP OF THE MALAWI CARBONATITEALKALINE PROVINCE AND THE LUPATA-LEBOMBO VOLCANICS 237 A, R. Woolley...Gass 14 THE EVOLUTION OF THE TIBESTI VOLCANIC PROVINCE, EASTERN SAHARA P. M., Vincent : 15 THE STRUCTURAL...Highlands and part in the Midland Valley. In the Western Highlands he and Richey established for the first...concentrations. Such was the study of the Nuanetsi Igneous Province in Rhodesia. The ring complexes there appeared...200. The parent magma of the British Tertiary Province. Summ. Progr. geol. Surv. G.B., Pt. 2 (for 1930) |  | | Book | | phosphorus handbook. Wiley. New York Moore PB (1982) Pegmatite minerals ofP(V) and B(III). Mineral Assoc Can...Mode of Occurrence: Occurs in large masses in pegmatite at several mines in the Custer-Pringle area, Custer... South Dakota. Also found in pegmatite at Chanteloube, France; Buranga, Ruanda; Varutrask, Sweden; Sukula...Sukula and Lemnas, Finland; and in several other pegmatite deposits Amblygonite Optical Constants: IX...in Miocene clay at Bellaver de Cerdena, Gerona Province, Spain; in a bituminous clay rock at Messel, Hesse |  | | Journal (volume) | | Mineralization in the Migori Greenstone Belt, Macalder, Western Kenya: J. S. Ogola. . . . . . . . . . . . . . ...Precambrian Gabbro- anorthosite Complexes, Tete Province, Mozambique: M. W. C. Barr and M. A. Brown .....Discussion with Reference to the Niger-Nigerian Province: J . Kinnaird and P. Bowden . . . . . . . . ....Goedynamic Significance of Alkaline Magmatism in the Western Mediterranean Compared with West Africa : B. Bonin...Geochemical Characteristics of the Nigerian Anorogenic Province: R. A. Batchelor . . . . . . . . . . . . . . |  | | Journal (volume) | | bodies and fracture fillings. From the Haapaluoma pegmatite the following minerals, inter aha, are described:...and columbite are presented. From the Hunnakko pegmatite mineralogical description of montebrasite, alluaudite...Quartz diorite and granodiorite, granite and pegmatite . ...... .. . . . 13 13 Tectonics and stratigraphy........ . .. ... ..... . ........... . ....... Microcline perthite ......................................52 53 53 54 56 57 57 61 64 64 66 The Hunnakko pegmatite . . . . . . . . . . . . . . . . . . . . . . . |  | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...Colorado at the Pelican Dives mine, Silver Plume district, and at the Little Emma mine, Clear Creek County;...lode, Summit County, and in the Cripple Creek district. It is also found in Canada; Mexico; Bolivia;...California; in sodalite-syenite in the Julianehaab district, Greenland; in the liparite lavas of the island...slate and metamorphosed dolomite in the Beiyun-Obo district, Inner Mongolia, China, associated with aegirine |  | | Book (volume) | | yegorovite Na4[Si2O4(OH)2]2·7H2O from the Palitra pegmatite, Lovozero massif, Kola peninsula hydrated proton)...Ca2B4O4(OH)7Cl·7H2O Locality: Salar de Carcote deposit, El Loa province, Antofagasta, Chile. Description: Colourless crystal...borax deposit, Salar del Hombre Muerto, Salta province, Argentina (type locality). Description: Colourless...North pegmatite, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune, Betafo District, Vakinankaratra...Vakinankaratra Region, Antananarivo Province, Madagascar. Description: Grey grains from the association |
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