BGS mineralogy and petrology collection record
| Sample number | E10684; COLLNO85; |
|---|---|
| Sample Donor | Blake,Professor |
| Rock name | 'Original entry: Hornfels' |
| Stratigraphy | Not entered |
| Comments | see mem. Geology of Anglesy p 332 Epiclasts of Quartz , Albite & White Mica, well preserved and coarser than usual Porphyroblasts of ? Xantho Phyllite Palaeoz |
| Locality details | Between Twycross and Llanfaelog probably near Melin-y-bon? [W. mill of 1"] on Byrn-Du Betwwen Twycross fault of Granite |
| 50k map sheet | Caernarfon (105) |
| Map reference | SH 346 726 |
| 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
E10684
