BGS mineralogy and petrology collection record
| Sample number | MR12283; COLLNO129; |
|---|---|
| Sample Donor | Hughes, H.O. |
| Rock name | 'Original entry: Diabase' |
| Stratigraphy | Not entered |
| Comments | Pillowry. Purple variety Grwna Group |
| Locality details | Bryn Llwyd, 1/2ml. SW of Newborough church |
| 50k map sheet | Caernarfon (105) |
| Map reference | SH 397 645 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |