Stilbite Subgroup from Rio Grande do Sul, Brazil
Brazil | |
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| Zeolite collection of Voker Betz |
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| Zeolite collection of Volker Betz |
| Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 116-117). |
Brazil | |
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| |
| Zeolite collection of Voker Betz |
| |
| Zeolite collection of Volker Betz |
| Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 116-117). |
Das Antas tunnel, Veranópolis, Rio Grande Do Sul, Brazil