BGS mineralogy and petrology collection record
| Sample number | E621 |
|---|---|
| Sample Donor | Museum Specimens |
| Rock name | 'Original entry: Felsite' |
| Stratigraphy | Not entered |
| Comments | Cut from Mus.Spec. Prof. Ramsey collection ?or Murchison. Palaeozoic Intrusion. See Mem.Geol.of Anglesey, p.527. Ill-formed, compressed phenocrysts of alkali feldspar in microcrys |
| Locality details | Graig-Lwyd nr Llanfechell |
| 50k map sheet | Holyhead (93) |
| Map reference | SH 37 91 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |
Petrological thin sections
Links to high resolution images
Transition from XPL to PPL light
E621
