BGS mineralogy and petrology collection record
| Sample number | E69103; COLLNOGW632; |
|---|---|
| Sample Donor | Woodhall, D.G. |
| Rock name | Not entered |
| Stratigraphy | Not entered |
| Comments | Tuff (Silicic ?) |
| Locality details | Tributary of Brook, Gilwern Hill |
| 50k map sheet | Rhayader (179) |
| Map reference | SO 0920 5904 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |