BGS mineralogy and petrology collection record
| Sample number | MR9450 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Diorite. 'Original entry: Diabase-Porphyrite' |
| Stratigraphy | Ordovician. |
| Comments | Diabase-porphyrite,Ordovician,Collected byTG Jones J890 |
| Locality details | Llanelwedd,near Builth, W of Cadwgan above large machinery plant, |
| 50k map sheet | Builth (196) |
| Map reference | |
| Year collected | 1932 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |