BGS mineralogy and petrology collection record
| Sample number | E4255; COLLNO79; |
|---|---|
| Sample Donor | Cantrill, T.C. |
| Rock name | 'Original entry: Dolomitised Limestone' |
| Stratigraphy | Not entered |
| Comments | Not entered |
| Locality details | 850 Yds. E. at 35 deg. S. of mouth of Twrek fachan, Twrek Valley, 5 miles N. of Ystradgyulais, Brecon. |
| 50k map sheet | Ammanford (230) |
| Map reference | SN 792 182 |
| 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
E4255
