BGS mineralogy and petrology collection record
| Sample number | MR21432 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Picrite. 'Original entry: Polyphant Stone ?Picrite' |
| Stratigraphy | Not entered |
| Comments | Polyphant Stone ?Picrite,Collected bySW Hester |
| Locality details | Polyphant Qry.,Lewannick, |
| 50k map sheet | Tavistock (337) |
| Map reference | SX 260 826 |
| Year collected | 1957 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |