| 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 | | | 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....a n d the inferred s u l p h i d e s suggest pegmatite-like crystallization in an incompatible-element-enriched...was 1993 so alexandrite from the Hematita mine, Brazil, the p r o d u c t i o n of the Argyle d i a m | | | Catalog/List | largest Sapo Mine “shaving brush” and an exceptional Elbaite on Feldspar. And then there is another Rose Quartz...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’...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;...solid-solution series), AlAlLi (3650–3690 cm−1 for elbaite) and AlR2+Li (3692 and 3670 cm−1 for Fe- and Mn-rich...Mg-poor schorl from the Limoeiro mine, Murta, Minas Gerais, Brazil, the band of OH groups in the W site coordinated...spectra of (a) Fe-rich elbaite, (b) Mn-rich elbaite, (c) elbaite, (d) Ca-bearing elbaite, (e) Mn-rich schorl...for Li-bearing tourmalines (solid solutions of elbaite, tsilaisite and schorl), the following assignment |
|