BGS mineralogy and petrology collection record
| Sample number | E62451; COLLNOHF89-35; |
|---|---|
| Sample Donor | Evans, J.A. |
| Rock name | Not entered |
| Stratigraphy | Not entered |
| Comments | Dervenlas mudrock |
| Locality details | Roadside Qry. by Dam |
| 50k map sheet | Rhayader (179) |
| Map reference | SN 872 635 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |