 | | Journal (article/letter/editorial) | | PYROCHLORE-GROUP MINERALS FROM THE LUESHE AND ARAXÁ (BARREIRO) CARBONATITES BY 57Fe MÖSSBAUER SPECTROSCOPY...Lueshe in the Democratic Republic of Congo, and Araxá in Brazil. In contrast to the common assumption that...O2– and 1 OH–, whereas in bariopyrochlore from Araxá, the unusually large value of the quadrupole splitting...Republic of Congo, and the Barreiro carbonatitic complex at Araxá, in Brazil, using 57Fe Mössbauer spectroscopy...bariopyrochlore with BaO up to 19% (Mariano et al. 1997) from Araxá was used for the present investigation. All samples |  | | Journal (article/letter/editorial) | | Weathered crusts overlying carbonatite complexes in Brazil and one hard rock carbonatite deposit in Canada...currently Mibra Mine, Volta Grande (Brazil), the Pitinga Mine (Brazil) and Marropinno (Mozambique). The...Papp (2009a, 2011a, 2013a) 1200 1000 Australia Brazil Canada 800 Rwanda Mozambique 600 Other World...Russia and India. Production comes primarily from Brazil. Production from Canada and other 500 400 300...and Papp (2009a, 2011b, 2013b) 70000 60000 50000 Brazil 40000 Canada 30000 Other World Total 20000 |  | | Journal (article/letter/editorial) | | aegirine and a pale blue-green, manganoan magnesio-arfvedsonite. Quartz and any mafic minerals of the parent...has previously been metasomatically enriched (Barreiro and Cooper, 1987). Crustal interaction is limited...and post-cumulus processes. Lithos, 31, 207-25. Barreiro, B.A. and Cooper, A.F. (1987) A Sr, Nd, and Pb...Southwest Namibia. Geology, 19, 1193-6. Cooper, A.F., Barreiro, B.A., Kimbrough, D.L. and Mattinson, J.M. (1987)...Carbonatites, Pocos de Caldas, Minas Gerais, Brazil. Ministerio das Minas e Energia, 188, 207-12. Gold |  | Smith, M.P., Moore, K., Kavecsánszki, D., Finch, A.A., Kynicky, J., Wall, F. (2016) From mantle to critical zone: A review of large and giant sized deposits of the rare earth elements. Geoscience Frontiers, 7 (3) 315-334 doi:10.1016/j.gsf.2015.12.006 | Journal (article/letter/editorial) | | sodic pyroxene (e.g. aegirine) and amphibole (arfvedsonite and riebeckite). Extreme fractional crystallisation...fluorite, apatite, aegirine-augite, riebeckite, arfvedsonite amphibole and barite, with a host of subsidiary...(Moore et al., 2015). ACCEPTED MANUSCRIPT Araxá – Araxá is a carbonatite intrusion-hosted deposit, which...forms part of the Alto Paranaiba Province, Southern Brazil (Traversa et al., 2000). It consists of a 4.5 km...intruding Proterozoic schists and quartzites of the Araxá Group. It has 2.5 km wide, fenite aureole (Traversa |  | | Journal (article/letter/editorial) | | converted distally to a peralkaline aegirine-arfvedsonite-albite assemblage, and proximally to aegirine-albite...intrusion of mantle-derived lamprophyric magmas (Barreiro and Cooper, 1987) is thought to relate to tensional...aegirine-albite(Ab99.sAno.5)-niobian rutile-magnesio-arfvedsonite-siderite (Fel.172Mno.o22Mgo.8o2Cao.os8 (CO3...characterized by additional magnesioriebeckite/magnesio-arfvedsonite and barian muscovite, to a country rock, garnet...apatite. Contrib. Mineral. Petrol., 93, 491-503. Barreiro, B.A. and Cooper, A.F. (1987) A Sr, Nd, and Pb |  | | Journal (article/letter/editorial) | | Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil) Ingrid.W. Hadlich, Artur C. Bastos Neto, Nilson...Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil), Ore Geology Reviews (2019), doi: https://doi...Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil). Ingrid. W. HADLICH1, Artur C. BASTOS NETO2, Nilson...Bento Gonçalves 9500, Porto Alegre, 91501-970, RS, Brazil. ingrid.hadlich@ufrgs.br. 2 Instituto de Geociências...Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil. artur.bastos@ufrgs.br, vitor.pereira@ufrgs.br |  | | Journal (article/letter/editorial) | | Cooper 1971). More recently, U–Pb and Rb–Sr ages (Barreiro & Cooper 1987, Cooper et al. 1987) and K–Ar studies...schists characterized by the presence of magnesio-arfvedsonite or riebeckite (Fig. 3A) occurring with aegirine...Institution of Washington, using techniques outlined by Barreiro & Cooper (1987). Mineral Chemistry Representative...in patterns of magnesian carbonatite at Juquia, Brazil (Beccaluva et al. 1992). The low LREE contents...Sr–Nd–Pb isotope ratios have been determined by Barreiro & Cooper (1987). Dykes from the Haast River segment |  | | Journal (article/letter/editorial) | | metabasite PT are reconstituted to albite-aegirine–arfvedsonite/riebeckite assemblages. Geochemically the metabasites...it is converted to albite-aegirine-riebeckite/arfvedsonite schist and, in places adjacent to the carbonatite...7028-0.7035) reported for the Alpine Dyke Swarm (Barreiro and Cooper, 1987). In contrast to these low isotope...Geology (Isotope Geosciences) 65, 147- SC RI 166. Barreiro, B.A., Cooper, A.F., 1987. A Sr, Nd, and Pb isotope...Mineralogical Magazine 59, 401-408. Cooper, A.F., Barreiro, B.A., Kimbrough, D.L., Mattinson, J.M., 1987 |  | | Book | | .......................................... 167 Brazil..................................................particular of Africa, the U.S.S.R., Canada and Brazil, much of it inspired by the search for exploitable...Montreal area of Canada and for central Coais, Brazil. N11111ber and na111e Each occurrence has been...a n;:itional number, for example Jacupiranga is Brazil 88. This is followed by the preferred name of the...albite, green biotite, sphene, apatite and rare arfvedsonite, aegirine-augite and magnet ite. The rock of |  | | Report (issue) | | Paulista phosphate deposit in Pernambuco State, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...adjacente incluindo depósitos minerais: Brasilia, Brazil, Departamento Nacional da Producao Mineral, p....1989a, The Jacupiranga apatite deposit, Sao Paulo, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...1989b, The Ipanema phosphate deposit, Sao Paulo, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...of Catalao I ultramafic alkaline complex, Goias, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson |  | | Book (edition) | | International Symposium on Carbonatites in Pocos de Caldas, Brazil for which this writer was keynote speaker. The... Pakistan, Quebec, Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites...Quebec and Araxa, Brazil) and important sources of P, Ti, Cu and CaCO; (Jacupiranga, Brazil). In addition...Carbonatites of the World United States Canada Brazil Greenland, Europe, and the U.S.S.R. Africa India...Algoma-Sudbury districts of Ontario (Parsons, 1961). For Brazil few detailed reports are available, but summaries |  | Macdonald, R., Bagiński, B., Leat, P.T., White, J.C., Dzierżanowski, P. (2011) Mineral stability in peralkaline silicic rocks: Information from trachytes of the Menengai volcano, Kenya. Lithos, 125 (1) 553-568 doi:10.1016/j.lithos.2011.03.011 | Journal (article/letter/editorial) | | This, combined with presence of fluorine-rich arfvedsonite in the groundmass, led White et al. (2006) to...discontinuous narrow rim of arfvedsonite. Leat (1983) presented two arfvedsonite analyses in a pre-caldera... Scaillet and Macdonald (2006b) synthesised arfvedsonite at 150 MPa under water-rich conditions and fO2...magnesiorichterite, ferrorichterite and magnesio-arfvedsonite. The Pantellerian pantellerite studied experimentally...the amphibole synthesised was Fe–eckermannite–arfvedsonite, the Na content increasing with increasing melt |  | | Book | | crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto) 22: 183-185 ALTO...Burian goyazite from [Alto Bernardino, Paraiba,] Brazil (by J. S. White, Jr.) 12:379 ALUMOHYDROCALCITE...and muscovite from the Ze Pinto prospect, Minas Gerais, Brazil 21:405-408 --with J.P. Cassedanne: Crystallized...Pitora, Minas Gerais, Brazil 21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil...and platinum from C6rrego Born Sucesso, Minas Gerais, Brazil 23:471-474 AMARGOSA DESERT Hydroboracite |  | | Journal (article/letter/editorial) | | chemically similar to weakly peralkaline acmite-arfvedsonite intrusions within the caldera, but the peralkaline...groundmass of these minerals, accompanied by blue arfvedsonite and green acmite. In comparison with later calc-alkaline...Czamanske 1987): (1) distinctive marginal acmite-arfvedsonite granite and rhyolite porphyry (76-77% SiO2)...crystallisation of chemically analogous peralkaline acmite-arfvedsonite granite provide the first record of high-silica...caldera collapse survived as selvages of acmite-arfvedsonite granite within the subcaldera chamber; most |  | | Book | | deposited in the sedimentary basin of Curitiba, Brazil (Cesbron et al. 1979) is still problematical considering...REE patterns of lanthanide-(Nd) frorn Curitiba, Brazil (a) and lanthanide-(Ce) frorn Britannia Mine, UK...identified from only a single oeeurrenee at Alto do Giz, Brazil, where it forms as a replaeement produet ofmierolite...established its presence in the Alto do Giz pegmatite in Brazil. So far, alumotantite shows only limited Substitution...from 0.2 to 3.98 wt% in senaite from Colorado and Brazil (Foord et al. 1984).1t is conceivable that minor |  | Morgenstern, Regine, Turnbull, Rose E., Ashwell, Paul A., Horton, Travis W., Oze, Christopher (2019) Petrological and geochemical characteristics of REE mineralization in the A-type French Creek Granite, New Zealand. Mineralium Deposita, 54 (7) 935-958 doi:10.1007/s00126-018-0854-9 | Journal (article/letter/editorial) | | as hornblende, although rare riebeckite and arfvedsonite have also been found (Waight 1995). Accessory...of annite and alkali amphiboles (riebeckite, arfvedsonite; Waight et al. 1998a), graphic and granophyric... Contrib Mineral.Petrol 80:189–200 Cooper AF, Barreiro BA, Kimbrough DL, Mattinson JM (1987) Lamprophyre |  | | Book | | . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...southern Norway; northern Karelia, U.S.S.R.; Brazil, in Minas Gerais at Brejauba and Engenho Central, in Paraiba...Finland, and Alto do Giz, Rio Grande do Norte, Brazil), on tantalite (Main Tantalite Dike, Strelley,...related type of occurrence is at Barreiro, Araxa, Nlinas Gerais, Brazil, in a calcite vein cutting an alkalic |  | | Journal (article/letter/editorial) | | native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite Argyrodite Armenite Arsenic native...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named...conglomerate-hosted U deposits of the Randtype at Jacobina, Brazil (pers. com. P. Laznicka). Chromium-bearing garnet...Canada, Dore Lake, Australia, Campo Formoso, Bahia-Brazil) (Barnes and Francis, 1995; Leinonen, 1998; Kojonen...ultrabasic rocks such as in the Bacuri Complex-Amapa, Brazil (Spier and Filho, 2001). Further sites are found | | | Journal (article/letter/editorial) | | native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite Argyrodite Armenite Arsenic native...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named...conglomerate-hosted U deposits of the Randtype at Jacobina, Brazil (pers. com. P. Laznicka). Chromium-bearing garnet...Canada, Dore Lake, Australia, Campo Formoso, Bahia-Brazil) (Barnes and Francis, 1995; Leinonen, 1998; Kojonen...ultrabasic rocks such as in the Bacuri Complex-Amapa, Brazil (Spier and Filho, 2001). Further sites are found |  | Koutsovitis, Petros, Soukis, Konstantinos, Voudouris, Panagiotis, Lozios, Stylianos, Ntaflos, Theodoros, Stouraiti, Christina, Koukouzas, Nikolaos (2022) The Late Cretaceous magmatic arc of the south Aegean: Geodynamic implications from petrological and geochemical studies of granitoids from Anafi island (Cyclades – Greece) International Geology Review, 64 (6) 820-843 doi:10.1080/00206814.2021.1884906 | Journal (article/letter/editorial) | | alkali-rich mafic silicates (e.g. aegirine, arfvedsonite, riebeckite), but also by the presence of titanite...1 Stouraiti, C., Mitropoulos, P., Tarney, J., Barreiro, B., McGrath, A. M., and Baltatzis, E., 2010. |  | | Report (issue) | | Otago, South Island, New Zealand . Barbara A. Barreiro and Alan F. Cooper Rb/Sr and Sm/Nd ratios of metasomatized...Zealand indicates a Paleozoic mantle enrichment (Barreiro and Cooper). However, calculation of diffusion...depletion and later selective LIL enrichment (Barreiro and Cooper). More than one enrichment event may...Australia: Menzies and Wass, 1983; New Zealand: Barreiro, 1983, Barreiro and Cooper, this volume; the western United...signatures that are relatively radiogenic (Barreiro, 1983; Barreiro and Cooper, this volume) or nonradiogenic |  | Stevens, John G., Khasanov, Airat M., Miller, J. W., Pollak, Herman, Li, Zhe - Eds. (2002) Mössbauer Mineral Handbook (2nd ed.) Mössbauer Effect Data Center, Asheville, NC. | Book (edition) | | Lithos 5, 217-25(1972) Mossbauer Resonance of Arfvedsonite and Aegirine-Augute from the Joan Lake Agpaitic...237-46(1975) Determination of (Fe2+)/(Fe3+)-ratios in Arfvedsonite by Mossbauer Spectroscopy A.Abras, and R.A.Mansur...Pelitic Rock from the Bambui Group, State of Minas Gerais, Brazil (In German) (Chem.Abstr.119(8):76632d) A...M.C.Boiron, M.Cathelineau, and F.E.Wagner, in "Brazil Gold '91:The Economics, Geology, Geochemistry and...Microcrystalline Goethite and Humic Acid in Some Oxisols from Brazil J.Friedl, F.E.Wagner, J.A.Sawicki, D.C.Harris, |  | | Book | | deposits (e.g. Cons. Lafaiete and Serra do Navio, Brazil; Section 23.3.5. and Fig. 23-10), are rare. One...in the Santa Catarina crystalline complex, S.E. Brazil (Morro da Fumaca) and elsewhere. Of the minor metallic...provinces (the Brito-Arctic Province, Atlantic coast of Brazil). Small plateau-basalt provinces are frequently...amygdaloidal basalts (as in the Alto Uruguai area, Brazil; Szubert et al., 1981) and interflow felsic conglomerates...various areas of the world (Table 31-2). In southern Brazil and Uruguay frequent showings are associated with |  | | Book | | deposits (e.g. Cons. Lafaiete and Serra do Navio, Brazil; Section 23.3.5. and Fig. 23-10), are rare. One...in the Santa Catarina crystalline complex, S.E. Brazil (Morro da Fumaca) and elsewhere. Of the minor metallic...plateau-basalt provinces are Atlantic coast of Brazil). frequently linear and often discontinuous. They...amygdaloidal basalts (as in the Alto Uruguai area, Brazil; Szubert et al., 1981) and interflow felsic conglomerates...various areas of the world (Table 31-2). In southern Brazil and Uruguay frequent showings are associated with |  | | Report (issue) | | leucogranitic dikes, and pegmatitic peralkaline arfvedsonite granite. Late-stage, transitional ferrobasaltic...emplacement. Amphibole occurs as clusters of arfvedsonite, with minor riebeckite, these alkali amphiboles...Mafic Microgranular Enclaves from Two Foldbelts, NE Brazil 1 Ferreira, V.P., 1Sial, A.N., 2 Fallick, A.E...Geol. UFPE, P. 0. Box 7852, Recife, 50732-970, Brazil 2 Scottish Universities Research and Reactor Centre...Department of Geology, UFBA, Salvador, Bahia, 40170-290, Brazil Metaluminous granodiorite/tonalite plutons (Concei~ao |
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