| Title | Carbonaceous shale, St. Clair, Pennsylvania |
| Description | This fine grained carbonaceous shale contains many whitish plant impressions and shows rock cleavage. The photographed specimen is 9 cm across. |
| Location | USA ▹ Pennsylvania. Near St. Clair. |
| Photographer | Darla Sondrol. 2001-03-22. |
| Collection | Ward’s Collection of Classic North American Rocks #53. |
| Key words | carbonaceous shale, shale, Pennsylvania |
| Tech details | 1003 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 242 |
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