BGS mineralogy and petrology collection record
| Sample number | MR14890; F4137; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyry' |
| Stratigraphy | Permian. |
| Comments | porphyry, Permian,Collected by W Maunon:M3358 |
| Locality details | East side of Holsfjorden, 25km WNW of Oslo,surface exposure,Norway |
| 50k map sheet | Not entered |
| Map reference | 59:58,10:20 |
| Year collected | 1935 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |