BGS mineralogy and petrology collection record
| Sample number | E74972; COLLNODIS1010; |
|---|---|
| Sample Donor | Schofield, D. |
| Rock name | 'Original entry: Felsic Tuff' |
| Stratigraphy | Not entered |
| Comments | crystal tuff from base of succession |
| Locality details | Craig cwm Dulyn |
| 50k map sheet | Nefyn (118) |
| Map reference | SH 49760 49343 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |