AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Brazil > Calcite and Amethyst |
DESCRIPTION: | No. 21749 |
Mineral: | Calcite and Amethyst |
Locality: | Irai, Rio Grande do Sul, Brazil |
Description: | Sculptural formation of purple-gray amethyst quartz crystals up to 25 mm with colorless calcite crystals up to 9 mm. The calcite fluoresces red-orange under UV illumination. All are grown on matrix of green nontronite. |
Overall Size: | 8x6x5 cm |
Crystals: | 1-25 mm |
Archived: | For reference only |
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