BGS mineralogy and petrology collection record
| Sample number | E22729; COLLNO3; |
|---|---|
| Sample Donor | Dunham,K.C. |
| Rock name | Andesite. 'Original entry: Porphyrite' |
| Stratigraphy | Not entered |
| Comments | Diabase 3 ft. from shale. |
| Locality details | Penmaenmawr Quarry. Craiglllwyd Contact. |
| 50k map sheet | Llandudno (94) |
| Map reference | SH 702 755 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |
Petrological thin sections
Links to high resolution images
Transition from XPL to PPL light
E22729
