Lagache, M., Quemeneur, J. (1997) The Volta Grande Pegmatites, Minas Gerais, Brazil; an example of rare-element granitic pegmatites exceptionally enriched in lithium and rubidium. The Canadian Mineralogist, 35 (1) 153-165

Quéméneur, J., Lagache, M. (1999) Comparative study of two pegmatitic fields from Minas Gerais, Brazil, using rubidium and cesium content of the micas and feldspars. Brazilian Journal of Geology, 29 (1) 27-32

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	Graupner, T., Melcher, F., Gäbler, H.-E., Sitnikova, M., Brätz, H., Bahr, A. (2010) Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data. Mineralogical Magazine, 74 (4) 691-713 doi:10.1180/minmag.2010.074.4.691	Journal (article/letter/editorial)
	concentrations and distribution patterns of columbite-tantalite minerals from Ta-ore provinces worldwide are presented...K EY WORDS : LCT family pegmatites, columbite-tantalite, REE geochemistry, LA-ICP-MS data. Introduction... These include: (1) the Homestead pegmatite, Tantalite Valley, Namaqualand, Namibia, Neoproterozoic (Kibaran)...e.g. Černý, 1989, Fig. 1) using a columbite-tantalite quadrilateral. Three ﬁelds TABLE 1. Comparison...fractionation trends of CGM in the columbite-tantalite quadrilateral (XMn (XMn = 100*Mn/ (Mn+Fe)), XTa

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Tantalite from Volta Grande mine (Mibra mine), Nazareno, Minas Gerais, Brazil

Tantalite from
Volta Grande mine (Mibra mine), Nazareno, Minas Gerais, Brazil