BGS mineralogy and petrology collection record
| Sample number | MR14932; F4175; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyry' |
| Stratigraphy | Not entered |
| Comments | porphyry, ,Collected by W Maunon:M3438 |
| Locality details | Island of ?Toftehohnen, Oslo fjord and 14 km E of Holmestrand,surface exposure,Poor handwriting in ledger for locality,Norway |
| 50k map sheet | Not entered |
| Map reference | 59:28,10:30 |
| Year collected | 1935 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |