BGS mineralogy and petrology collection record
| Sample number | E25317; COLLNO3; |
|---|---|
| Sample Donor | Archer,A.A. |
| Rock name | Wacke. 'Original entry: Greywacke' |
| Stratigraphy | Not entered |
| Comments | Not entered |
| Locality details | Cwm Ystradllynn, nr SE of Cwm-y-Fedw |
| 50k map sheet | Snowdon (119) |
| Map reference | SH 557 444 |
| 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
E25317
