Chemical composition of gahnite and degree of pegmatitic fractionation in the Borborema Pegmatitic Province, northeastern Brazil

Chemical composition of gahnite and degree of pegmatitic fractionation in the Borborema Pegmatitic Province, northeastern Brazil

Gahnite electron probe microanalyses from three pegmatites (Mirador, Capoeira and Quintos) of the Borborema Pegmatitic Province in northeastern Brazil allowed to determine molar compositions ranging from 86.22 to 95.41 mol% gahnite (ZnAl2O4), 1.51 to 6.62 mol% hercynite (Fe2+Al2O4), 0.11 to 5.89 mol...

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Bibliographic Details
Main Authors: Dwight R. Soares, Hartmut Beurlen, Ana C.M. Ferreira, Marcelo R.R. da-Silva
Format: Article
Language:English
Published: Academia Brasileira de Ciências 2007-09-01
Series:Anais da Academia Brasileira de Ciências
Subjects:
gahnita
pegmatitos graníticos de elementos raros
Província Pegmatítica da Borborema
química mineral
gahnite
rare-element granitic pegmatites
Borborema Pegmatitic Province
mineral chemistry
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000300005

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