BGS mineralogy and petrology collection record
| Sample number | MR6879 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyroid' |
| Stratigraphy | Not entered |
| Comments | porphyroid, ,Collected by B St�rtz, Bonn:89 |
| Locality details | ?Johiefenig, Dame de Meuse, near Mairus, Franzos, Ardennes,surface exposure,?Belgium |
| 50k map sheet | Not entered |
| Map reference | Not entered |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |