|
Brazil | |
| Vezzalini, G. (1979) Secondo ritrovamento della nekoite. Periodico di Mineralogia: 48: 5-13. |
| |
| Mr. Rafael Hernandes Corrêa-Silva. |
| Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 116-117). |
| Mason, B. & Greenberg, S. S. (1953) Zeolites and associated minerals from souther Brasil - Arkiv för Mineralogi och Geologi, 1 (18), 519-526 |
| Manfred Bergmann (2009) Lapis, 34, #3, 30-34. |
| Manfred Bergmann (2009) Lapis, 34, #3, 30-34. |
Das Antas tunnel, Veranópolis, Rio Grande Do Sul, Brazil