BGS mineralogy and petrology collection record
| Sample number | E8376; MR8030; |
|---|---|
| Sample Donor | Not entered |
| Rock name | Ash (Tephra). 'Original entry: Schistose, Calc-Altered Volcanic Ash In Slate Bed' |
| Stratigraphy | Caradoc. |
| Comments | Schistose, calc-altered volcanic ash in slate bed,Caradocian?,Collected byButler |
| Locality details | Rhosydd?,Tan-t-Grisiau, |
| 50k map sheet | Snowdon (119) |
| Map reference | Not entered |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |