BGS mineralogy and petrology collection record
| Sample number | E28876; COLLNO108; |
|---|---|
| Sample Donor | Road Research Laboratory |
| Rock name | 'Original entry: Porphyritic Microgranite' |
| Stratigraphy | Not entered |
| Comments | Described as Microgranite (P), claimed to be Granite (G). |
| Locality details | Castle-An-Dinas Quarry, Penzance. |
| 50k map sheet | Penzance (351) |
| Map reference | SW 484 347 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |