BGS mineralogy and petrology collection record
| Sample number | E61623; COLLNOMH1537; |
|---|---|
| Sample Donor | Howells,M.F. |
| Rock name | Tuff, Rhyolitic . |
| Stratigraphy | Not entered |
| Comments | Acid tuff |
| Locality details | Tyran Mawr |
| 50k map sheet | Barmouth (149) |
| Map reference | SN 6820 1133 |
| 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
E61623
