BGS mineralogy and petrology collection record
| Sample number | MR22609 |
|---|---|
| Sample Donor | Not entered |
| Rock name | Porphyry. 'Original entry: Porphyry Dyke' |
| Stratigraphy | Not entered |
| Comments | Porphyry dyke, ,Collected by D C Knill:18 |
| Locality details | Downings, Rosguill, Co. Donegal,surface exposure,Republic of Ireland |
| 50k map sheet | Not entered |
| Map reference | 55:12,7:49 |
| Year collected | 1960 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |