BGS mineralogy and petrology collection record
| Sample number | E18072; COLLNOM203; |
|---|---|
| Sample Donor | Matley, C.A |
| Rock name | 'Original entry: Altered Mudstone' |
| Stratigraphy | Not entered |
| Comments | Just above Fucoid & Chert Horizon; Hard Bed in Purple Shale; Gamlan Series |
| Locality details | E of Bwlch y Rhiwgyr, Nr. Greenstone Sill |
| 50k map sheet | Harlech (135) |
| 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
E18072
