| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Pennsylvania > Calcite (twinned crystals) |
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| DESCRIPTION: | No. 32502 |
| Mineral: | Calcite (twinned crystals) |
| Locality: | York Stone Quarry, York County, Pennsylvania |
| Description: | Transparent crystals of pale-brown calcite, many exhibiting twinning. The twin planes are difficult to show in photographs but are easily seen in person. The calcite was cleaned in a weak acid to remove the limonite stain on the surface. |
| Overall Size: | 9x7x4 cm |
| Crystals: | 3-30 mm |
| Archived: | For reference only |
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