BGS mineralogy and petrology collection record
| Sample number | E54440; COLLNOFU12; |
|---|---|
| Sample Donor | Fletcher, Chris J.N |
| Rock name | Siltstone (Undifferentiated). 'Original entry: Siltstone' |
| Stratigraphy | Not entered |
| Comments | Tuffaceous siltstone. Tryfan Group. |
| Locality details | 200 m. at 300 deg. from summit of Cilgwyn. |
| 50k map sheet | Nefyn (118) |
| Map reference | SJ -503 5437 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |