BGS mineralogy and petrology collection record
| Sample number | E590; MR698; |
|---|---|
| Sample Donor | Not entered |
| Rock name | 'Original entry: Slate' |
| Stratigraphy | Not entered |
| Comments | Tremadoc slate, 206/41 |
| Locality details | SE of Cwmorthin Lake, Ffestiniog, Merionethshire (Tan-y-Grision, Ffestiniog) |
| 50k map sheet | Snowdon (119) |
| Map reference | SH 681 461 |
| 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
E590
