BGS mineralogy and petrology collection record
| Sample number | E61964; COLLNOMH1565; |
|---|---|
| Sample Donor | Howells,M.F. |
| Rock name | Rhyolite. |
| Stratigraphy | Not entered |
| Comments | Clast rich acid tuff |
| Locality details | S of Twll yr Ogof |
| 50k map sheet | Barmouth (149) |
| Map reference | SN 6590 1110 |
| 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
E61964
