BGS mineralogy and petrology collection record
| Sample number | MR7757 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Diorite. 'Original entry: Dolerite, Intrusion' |
| Stratigraphy | Ordovician. |
| Comments | Dolerite, intrusion,post Ordovician,Collected byTG Jones J49 |
| Locality details | Pem Berry,E end of quarry, near St Davids, |
| 50k map sheet | St. Davids (209) |
| Map reference | Not entered |
| Year collected | 1931 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |