There have been a number of publications on the type minerals of different countries and regions. These generally provide thumbnail sketches with basic information for each valid mineral species described from those places, as well as some more general mineralogical background on the areas. While these types of publications are useful compilations of mostly historical and collector interest, they probably have relatively little to offer researchers.

“Type Mineralogy of Brazil: A Book in Progress” takes a quite different tack. Besides the currently valid mineral species described from Brazilian locales, it includes invalid, discredited, unnamed, unidentified and problematic minerals. The entries...

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