| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Pennsylvania > Calcite (twinned crystals) |
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| DESCRIPTION: | No. 63319 |
| Mineral: | Calcite (twinned crystals) |
| Locality: | Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania |
| Description: | Lustrous translucent-to-transparent golden yellow calcite crystals that are flatted rhombohedral form. Though it is difficult the see, the calcite crystals are twinned on {111} with twin planes visible around the perimeter of each twinned pair. Ex. Mort Metersky collection #Ca-943, director of International Calcite Collectors Association; originally acquired in 1995 |
| Overall Size: | 6x5.5x4 cm |
| Crystals: | 3-42 mm |
| Archived: | For reference only |
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