| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Illinois > Fluorite with Bitumen |
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| DESCRIPTION: | No. 75846 |
| Mineral: | Fluorite with Bitumen |
| Locality: | Cave-in-Rock District, Hardin County, Illinois |
| Description: | Lustrous transparent yellow fluorite crystals with black bitumen (hydrocarbon) on the bottom. The fluorite crystals are cubic form with textured areas on the faces where it appears the fluorite form around bladed barite that later dissolved away. Collected ca. 1985 |
| Overall Size: | 5x4.5x2.5 cm |
| Crystals: | 4-18 mm |
| Archived: | For reference only |
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