 | | Report (issue) | | respectable, sometimes exceeding 1 meter, but they do not approach the giant-sized crystals found in the...from some pegmatites. This specimen, from Minas Gerais, Brazil, is housed in the Deutsches Edelstein Museum...crystals are found in soils and stream gravels in Brazil. On the other hand, at high temperatures and pressures...microcline (amazonite), quartz, albite, tourmaline (schorl to elbaite and liddicoatite ), spodumene, lithian...determination is in fact a judgment call, one that we do notfeel is ours to make. We aspire to be a practical |  | | Report (volume) | | Pernambuco, Recife, Brazil J. S. BETTENCOURT Universidade de Sao Paulo, Brazil C. P. DE CAMPOS Lud...FERREIRA Federal University of Pernambuco, Recife, Brazil 2011 Published by The Geological Society London...(Iran), Asia (Japan and China) and South America (Brazil and Argentina) and spanning rocks from Palaeoproterozoic...–Cambrian granitic magmatism in the Araçuaı́ orogen (Brazil), the Eastern Brazilian Pegmatite Province and...50670-000 Recife, PE, Brazil 2 Institute of Geosciences, University of São Paulo, Rua do Lago 562, 055089-080 |  | | Journal (article/letter/editorial) | | 1999), but experimental conclusions apparently Jo do not apply to topaz solid solutions found in a wide...coexisting micas in natural systems. In order to do this, almost all the chemical analyses of topaz (and...plagioclase in the greisenized Rio Branco granite, Brazil (Dos Santos et al., 2013); (L) Argillized granite...topaz) 1 1-n 15.48 na Ouro Preto area, Minas Gerais, Brazil lP 1 and 2 kbar ~370 of Little Three...region, Brazil Potosi tin deposit, Rondônia, northwestern 3 3-n 13.2 Yokoi et al. (1987) Brazil 23 |
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