| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Pennsylvania > Graphite in Marble (Calcite) |
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| DESCRIPTION: | No. 33306 |
| Mineral: | Graphite in Marble (Calcite) |
| Locality: | French Creek Iron Mines, St. Peters, Chester County, Pennsylvania |
| Description: | Metallic crystals of graphite (native carbon) in matrix of white marble that has crystallized into calcite. The graphite crystals are thin, hexagonal form with brilliant surface luster. See article: The French Creek Mine in Mineralogical Record v.25 #2. Ex. Stuart F. Wise collection #65 |
| Overall Size: | 7x6x4 cm |
| Crystals: | .1-5 mm |
| Archived: | For reference only |
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