; Niobium deposits in the alkaline-ultramafic intrusions Catalão ;
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Technical Paper

The complexity of the niobium deposits in the alkaline-ultramafic intrusions Catalão I and II – Brazil

International Symposium Niobium 2001

2002
Guimarães, Helvécio N
This paper describes the geological and mineralogical differences between the Catalão I and II niobium deposits and the development work carried out by Mineração Catalão to improve the recovery and quality of its pyrochlore concentrate. (AU)
Technical Paper (PDF 1.73 MB)
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