BGS mineralogy and petrology collection record
| Sample number | E10673; COLLNO74; |
|---|---|
| Sample Donor | Blake,Professor |
| Rock name | 'Original entry: Mica-Schist. Grey Gneiss.' |
| Stratigraphy | Not entered |
| Comments | Mona Complex. Pen-Zone. See Mem.Geol.of Anglesey.p.342. Quartz, alkali-feldspar. Both mica's. |
| Locality details | Porth-y-Lywd Island |
| 50k map sheet | Caernarfon (105) |
| Map reference | Not entered |
| 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
E10673
