BGS mineralogy and petrology collection record
| Sample number | MR8914 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyroid With Small Orthoclases' |
| Stratigraphy | Not entered |
| Comments | porphyroid with small orthoclases, ,Collected by B St�ntz (Bonn):90/109 |
| Locality details | Ravin de Mavius, Franzos, Ardennes,surface exposure,France |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |