BGS mineralogy and petrology collection record
| Sample number | E61000; COLLNOBRM202; |
|---|---|
| Sample Donor | Merriman,R.J. |
| Rock name | 'Original entry: Mudstone' |
| Stratigraphy | Not entered |
| Comments | Mudstone, Llanvirn |
| Locality details | S bank of Afon Saint, 1800 m at 047 deg from Caernarfon Castle |
| 50k map sheet | Caernarfon (105) |
| Map reference | SH 489 613 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |