| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Illinois > Fluorite with Calcite inclusions |
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| DESCRIPTION: | No. 41980 |
| Mineral: | Fluorite with Calcite inclusions |
| Locality: | Cave-in-Rock District, Hardin County, Illinois |
| Description: | Flawless blue cubic fluorite crystal with remnants of black bitumen (naturally occurring petroleum) in crevices. The fluorite is so transparent that scalenohedral tan-colored 3-4 mm calcite crystal inclusions are visible. One corner is cleaved. Ex. Robert C. Lambert (1919-2008) #171; acquired in 1973 |
| Overall Size: | 25x20x20 mm |
| Crystals: | 25 mm |
| Archived: | For reference only |
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