BGS mineralogy and petrology collection record
| Sample number | E9939; COLLNO151; |
|---|---|
| Sample Donor | Greenly,E. |
| Rock name | 'Original entry: Sillimanite Gneiss' |
| Stratigraphy | Not entered |
| Comments | 1" sheet 93. |
| Locality details | Big boss N.Tyddyn-gyrfa, NE.corner |
| 50k map sheet | Caernarfon (105) |
| Map reference | SH 386 808 |
| 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
E9939
