BGS mineralogy and petrology collection record
| Sample number | MR27142; COLLNODAN571; |
|---|---|
| Sample Donor | Dangerfield,J.; Merriman,R.J.; |
| Rock name | 'Original entry: Dolerite' |
| Stratigraphy | Not entered |
| Comments | Dolerite, intrusive into Lingula Flags.. |
| Locality details | Craig-y-tan quarry: at 200 yds due N of Trawsfyneydd station Merioneth |
| 50k map sheet | Harlech (135) |
| Map reference | SH 714 364 |
| Year collected | 1964 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |