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Brazil | |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| [var. Verdelite] Ferreira, A., Ferreira, V. P., Soares, D. R., & Vilarroel-Leo, H. S. (2005). Chemical and mineralogical characterization of elbaites from the Alto Quixaba pegmatite, Seridó province, NE Brazil. Anais da Academia Brasileira de Ciências, 77(4), 729-743. |
| Kievlenko, Eugenii Ya., Soregaroli, A. - Ed. (2003) Geology of Gems - First English Edition. Ocean Pictures Ltd, Littleton, Colorado. p.1-468. |
| 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 |
| 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 |
| Sergio Varvello collection |
| Fernando Brederodes Collection |
Serra Branca pegmatite, Pedra Lavrada, Paraíba, Brazil