BGS mineralogy and petrology collection record
| Sample number | MR7755 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Felsite, Porphyritic. 'Original entry: Porphyrite' |
| Stratigraphy | Cambrian. |
| Comments | Porphyrite,post Cambrian,Collected byTG Jones J42 |
| Locality details | Middle Mill,NE of Whitchurch, |
| 50k map sheet | St. Davids (209) |
| Map reference | |
| Year collected | 1931 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |