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Brazil | |
| Atencio, D., Filho, R. R. C., Mills, S. J., Coutinho, J. M. V., Honorato, S. B., Ayala, A. P., Ellena, J., de Andrade, M. B. (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement. American Mineralogist, 96 (10) 1455-1460 doi:10.2138/am.2011.3594 Analysed (Reynaldo Contreira information) |
| Pereira das Neves, P. S, and Atencio, D. (2018) Enciclopedia dos Minerais do Brasil v. 6: Tectossilicatos, p. 279, Ed. da Ulbra. Canaos, Brazil. |
| Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Nb–Ta–(Ti–Sn) oxide mineral chemistry as tracer of rare element granitic pegmatite fractionation in the Borborema Province, Northeastern Brazil. Mineralium Deposita 43, 207-228. Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182 Canadian Mineralogist (1986): 24: 655-663. Rob Lavinsky rruff.geo.arizona.edu (n.d.) http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf. Mineralogical Magazine 1963 33 : 458-466 |
Alto do Giz pegmatite, Equador, Rio Grande do Norte, Brazil