BGS mineralogy and petrology collection record
| Sample number | E34885; COLLNODT56; |
|---|---|
| Sample Donor | Thomas,D. |
| Rock name | 'Original entry: Felsite Boulder' |
| Stratigraphy | Not entered |
| Comments | Boulder of felsite (Intrusive into Ordovician) |
| Locality details | Cliffs nr Pystyll Rhaiadr |
| 50k map sheet | Bala (136) |
| Map reference | SJ 0763 2925 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |