BGS mineralogy and petrology collection record
| Sample number | E39415; COLLNOHF306; |
|---|---|
| Sample Donor | Francis,E.H. |
| Rock name | Not entered |
| Stratigraphy | Not entered |
| Comments | Pale tuffite or hyaloclastite |
| Locality details | 1040 yds SSW of Pwll Du |
| 50k map sheet | Bangor (106) |
| Map reference | SH 7411 6547 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |