BGS mineralogy and petrology collection record
| Sample number | E47490; COLLNOMH681; |
|---|---|
| Sample Donor | Howells,M.F. |
| Rock name | 'Original entry: Tuff' |
| Stratigraphy | Not entered |
| Comments | Tuff, ? coarser grade |
| Locality details | West Bron Heulog, Llangynnog |
| 50k map sheet | Bala (136) |
| Map reference | SJ 0533 2640 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |
Petrological thin sections
Links to high resolution images
Transition from XPL to PPL light
E47490
