BGS mineralogy and petrology collection record
| Sample number | MR21715 |
|---|---|
| Sample Donor | Chaperlin,K. |
| Rock name | 'Original entry: Basic Igneous Rock' |
| Stratigraphy | Not entered |
| Comments | Basic igneous rock. NGR as in register. |
| Locality details | Quarry name: Bwlch Gwyn Quarry: at 3/4 ml E of Holland Arm's Station |
| 50k map sheet | Caernarfon (105) |
| Map reference | SH 479 728 |
| Year collected | 1958 |
| Bore name | Not applicable |
| Confidentiality | No restrictions |