| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Calcite twin crystals |
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| DESCRIPTION: | No. 11666 |
| Mineral: | Calcite twin crystals |
| Locality: | Egremont, West Cumberland Iron Mining District, Cumbria, England |
| Description: | Two long 11 cm white calcite crystals with triangular cross-sections partially-interpenetrating twins on (0001), the C-axis. This type of twin is best visualized by a 180° rotation about the C-axis, rather than by reflection across the {0001} plane. Ex. C. Bement #6940, ex. Scalisi, ex. Lawrence H. Conklin (1933-2016), ex. J. Freilich auction #110 |
| Overall Size: | 11x4 cm |
| Crystals: | 11 cm |
| Archived: | For reference only |
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