BGS mineralogy and petrology collection record
| Sample number | E38732; COLLNOCE25; |
|---|---|
| Sample Donor | Evans,C.D.R. |
| Rock name | 'Original entry: Tuff' |
| Stratigraphy | Not entered |
| Comments | Grey vitric tuff, about 20 ft from base of Lower Rhyolitic tuffs of the Snowdon V.S |
| Locality details | 155 yds 316 deg from Roman Bridge Halt |
| 50k map sheet | Snowdon (119) |
| Map reference | SH 7116 5148 |
| 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
E38732
