BGS mineralogy and petrology collection record
| Sample number | MR26723 |
|---|---|
| Sample Donor | Goode,A.J.J.; Sanderson,R.W.; |
| Rock name | 'Original entry: Shale' |
| Stratigraphy | Ordovician. Ordovician. |
| Comments | Grey shale. NGR as in register. |
| Locality details | Quarry name: Fron quarry: at 150 yds from Portreuddyn, on path to Fron oleu. Caernarvonshire |
| 50k map sheet | Snowdon (119) |
| Map reference | SH 580 410 |
| Year collected | 1963 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |