BGS mineralogy and petrology collection record
| Sample number | MR26414 |
|---|---|
| Sample Donor | Dangerfield,J. |
| Rock name | 'Original entry: Tuff' |
| Stratigraphy | Not entered |
| Comments | Grey fine grained tuff.. NGR as in register. |
| Locality details | Quarry name: Rhiwen quarry: at 2 miles N of Llanberis Caernarvonshire |
| 50k map sheet | Bangor (106) |
| Map reference | SH 574 637 |
| Year collected | 1963 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |