BGS mineralogy and petrology collection record
| Sample number | E7533 |
|---|---|
| Sample Donor | H.D.C |
| Rock name | Andesite. 'Original entry: Porphyrite' |
| Stratigraphy | Not entered |
| Comments | Not entered |
| Locality details | Tydden Howell Quarry, 2 miles S. of Clynog. |
| 50k map sheet | Nefyn (118) |
| Map reference | |
| 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
E7533
