 | | Report (issue) | | 529(3) Z=4 X-ray Powder Pattern: Jaguaraçu pegmatite, Minas Gerais, Brazil. 7.081 (100), 4.201 (90), 8.405...0.89 0.71 [14.99] 97.43 (1) Jaguaraçu pegmatite, Minas Gerais, Brazil; average of 7 electron microprobe...filling in albite in a complex pegmatite. Association: Albite, muscovite, zircon, kaolinite, columbite-(Fe)...columbite-(Fe). Distribution: From the Jaguaraçu pegmatite, Minas Gerais, Brazil. Name: Honors Carlos do Prado Barbosa...Geociências, Universidade de Saão Paulo, Saão Paulo, Brazil (DR707) and in the Systematic Reference Series |  | Atencio, D., Roberts, A. C., Cooper, M. A., Filho, L. A. D. Menezes, Coutinho, J. M. V., Stirling, J. A. R., Venance, K. E., Ball, N. A., Moffatt, E., Chaves, M. L. S. C., Brandão, P. R. G., Romano, A. W. (2012) Carlosbarbosaite, ideally (UO2)2Nb2O6(OH)2·2H2O, a new hydrated uranyl niobate mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure. Mineralogical Magazine, 76 (1) 75-90 doi:10.1180/minmag.2012.076.1.75 | Journal (article/letter/editorial) | | niobate mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure D. ATENCIO1...Paulo, Rua do Lago, 562, 05508-080 São Paulo, SP, Brazil Geological Survey of Canada, 601 Booth Street,...Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil Canadian...de Engenharia de Minas, Escola de Engenharia da Universidade Federal de Minas Gerais, Avenida Antônio...Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil [Received 31 December 2010; Accepted 1 December |  | Belakovskiy, D., Welch, M. D., Camara, F., Gatta, G. D., Tait, K. T. (2012) New Mineral Names. American Mineralogist, 97 (8) 1523-1530 doi:10.2138/am.2012.596 | Journal (article/letter/editorial) | | beginning of the 20th century from a granite pegmatite in a small pit near Åskagen quarry, mining village...niobate mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure...hydrated uranyl niobate from the Jaguaraçu pegmatite, Minas Gerais, Brazil, where it is a late-stage cavity...filling in albite and is associated with muscovite, zircon, kaolinite, and columbite-(Fe). It occurs as cream...high-potassium peralkaline pegmatite about 10 m long and up to 1 m thick. The pegmatite was (currently mined |  | | Journal (issue) | | 92kg); crystal 18km from Santa Barbara, Minas Gerais, Brazil Natural History Museum London Personal...limestones with graphite, serpentine and sporadic pegmatite complexes of synorogenic metasomatic or post-orogenic...alexandrite, cat's-eye and 102-8 chrysoberyl in Brazil. Journal of Gemmology, 23, 333-54 Epprecht, W....were dated using the SHRIMP ion microprobe. The zircon data indicate that different types of xenoliths...at different times. The combined data-set of all zircon U-Pb ages from all the xenoliths records four major |  | | Catalog/List | | IMPERIAL TOPAZ Ouro Preto, Iron Quadrangle, Minas Gerais, Brazil Only one area on the planet produces Imperial...commercial quantities: the Ouro Preto district in Brazil. Colors of the material produced range from pale... 53043 AQUAMARINE Guaratinga (Jaquetô), Bahia, Brazil Large and stout enough to qualify as a ‘blunt instrument’...com/5141 53058 ZIRCON Ural Mtns., Chelyabinsk Oblast’, Urals, Urals Region, Russia Zircon, is a naturally...workings south of the village of Paprok that explore pegmatite zones within the local Triassic slates. Thirty |  | | Book | | 42(H2O)0.18[Al2(Be2.35Li0.65)Si6O18] from Mokrusha pegmatite, Murzinka, Middle Urals (Yakubovich et al. 2009;...Libowitzky 2006). Polarization IR spectra of a mantle zircon Zr(SiO4) from Kimberley, South Africa demonstrate...Mg-poor schorl from the Limoeiro mine, Murta, Minas Gerais, Brazil, the band of OH groups in the W site coordinated...phosphates: nahpoite Na2(HPO4) from peralkaline pegmatite of the Lovozero massif (a), newberyite Mg(HPO4)·3H2O...[nominally, Fe2+Mn2+2(PO4)2·3H2O] from Cigana mine, Brazil (a), landesite [nominally, Fe3+Mn2+2 (PO4)2(OH)·] |
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