BERILOS DE PEGMATITOS DE SANTA MARIA DE ITABIRA, MINAS GERAIS - BRASIL

Auteurs

  • Vitória Régia P.R.O. Marciano Centro de Pesquisa Prof. Manoel Teixeira da Costa - I.G.C. - U.F.M.G.
  • Francisco Javier Rios Departamento de Geologia - Instituto de Geociências - U.F.Pa
  • Adriana B. Achtschin Bolsista de Iniciação Científica - CNPq - U.F.M.G.
  • José Marques Correia Neves Departamento de Geologia - I.G.C. - U.F.M.G.
  • Darcy P. Svisero Instituto de Geociências - U.S.P.

DOI :

https://doi.org/10.18285/geonomos.v2i2.225

Résumé

Samples of beryls from three different pegmatite bodies, representative of the Santa Maria de Itabiraregion have been studied by several analytical techniques: Color, refraction, luminescence, density, IRspectrum, XRD, cell parameters, fluid inclusions and chemical composition have been considered. Theberyls have been analyzed for main elements as well as the following trace elements Na, Li, Cs, K, Rb, Ca,Ba, Zr. Fe e Ti.The pegmatites described in this paper are situated at the southeastern side of São Francisco Craton andbelong to the Eastern Pegmatite Province (PPO). They are related to a magmatism of Brasiliano age. Theyare being exploited for beryl and gems such as aquamarine, heliodor, colorless topaz and amazonite.The data are discussed and interpreted from the petrologic and metallogenetic point of view.

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Biographie de l'auteur

Vitória Régia P.R.O. Marciano, Centro de Pesquisa Prof. Manoel Teixeira da Costa - I.G.C. - U.F.M.G.

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Publiée

1994-12-01

Numéro

Geonomos - v.2 n. 2 (1994)

Rubrique

Artigos

Licence

The copyrights of the works published in Geonomos are those of the author, with rights of first publication for the journal.