BGS mineralogy and petrology collection record
| Sample number | E581; MR738; |
|---|---|
| Sample Donor | Not entered |
| Rock name | 'Original entry: Granite' |
| Stratigraphy | Not entered |
| Comments | Rocks intrusive into Arenig and Llandeilo of N Wales. 224/41, B/31. |
| Locality details | Tan-y-Grisiau, 2 mi NW of Ffestiniog, Merionethshire |
| 50k map sheet | Snowdon (119) |
| Map reference | SH 685 452 |
| 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
E581
