BGS mineralogy and petrology collection record
| Sample number | MR17922 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyry' |
| Stratigraphy | Not entered |
| Comments | porphyry, ,Collected by CFD (?): |
| Locality details | Feldspar quarries, Island of Ornv, Stockholm archipelago,quarry,Sweden |
| 50k map sheet | Not entered |
| Map reference | 59:4,18:23 |
| Year collected | 1946 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |