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Brazil | |
| Berger, Vladimir I., Singer, Donald A., Orris, Greta J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE—Database and Grade and Tonnage Models . Open-File Report 2009-1139. U.S. Geological Survey doi:10.3133/ofr20091139 Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189 database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database. |
| Neves, P.C.P. das, Atencio, D. (2015) Enciclopédia dos Minerais do Brasil. Volume 3: Óxides e Hidróxidos. Campus ULBRA Canoas, 527 pages (in Portuguese). Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112 |
| Rocks & Min.: 63:43. |
| Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189 |
Tapira, Minas Gerais, Brazil