DOI: 10.11606/d.44.1994.tde-20032014-103510
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Mineralogia, inclusões fluidas e aspectos genéticos do topázio imperial da Região de Ouro Preto, Minas Gerais

Abstract: TRABALHos DE LABonarÓ2o z.z.t-PREPARAçÃo oe AMoSTRAS. .. 2.2.2-DENSIDADE RELATIVA 2.2.3-nmropos Óprlcos .. .. 2.2.4-olrnaçÃo DE RAIos x ..... 2.2.5-MICROSCOPIA EIETNONICA DE VARREDURA 2.2.6-ESTUDO DAS INCLUSOES FLUIDAS 2.2.7-ESpECTRoscoPIA DE ABSonÇÃo No INFRAVERMELHo .... 2.2.8-ESPECTROSCOPIA MICRO RAMAN 2.2.g-MICROSSONDA TIP NONICA z.z.to-ELETRoDo DE ÍoN esp¡cÍrlco PARA nlÚon 2.2.tt-GRAVIMETzuA (PERDA AO FOGO) z.z. tz-cAToDoLUMINEScÊNcn 3-cEoLocIA Do euADzuLÁrrno rpnnÍrnno. ........... 3.I-CONTEXTO GEOTECTON… Show more

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Cited by 7 publications
(18 citation statements)
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“…Table 3 correlates the data for temperature and pressure found in different beds in the region. These data suggest that the origin of imperial topaz in the Ouro Preto region is associated with hydrothermal processes and that the fluids have a metamorphic origin, probably resulting from decarbonatization reactions and dehydration of regional rocks, during some recurrent tectono-thermal episode (Gandini 1994;Almeida, 2004;Endo et al, 2007).…”
Section: The Imperial Topaz Of Minas Geraismentioning
confidence: 95%
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“…Table 3 correlates the data for temperature and pressure found in different beds in the region. These data suggest that the origin of imperial topaz in the Ouro Preto region is associated with hydrothermal processes and that the fluids have a metamorphic origin, probably resulting from decarbonatization reactions and dehydration of regional rocks, during some recurrent tectono-thermal episode (Gandini 1994;Almeida, 2004;Endo et al, 2007).…”
Section: The Imperial Topaz Of Minas Geraismentioning
confidence: 95%
“…For every 100 m 3 of this clayey material, there is 1 m 3 of unaltered rock and free minerals, from which 1 kg of topaz is extracted. Of all the topaz processed, only around 1% (10 g) are gemstones (Gandini, 1994).…”
Section: The Imperial Topaz Of Minas Geraismentioning
confidence: 99%
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