BGS mineralogy and petrology collection record
| Sample number | S30634 |
|---|---|
| Sample Donor | Allan,J.K. |
| Rock name | 'Original entry: Biotite-Andesine-Quartz Gneiss' |
| Stratigraphy | Not entered |
| Comments | Biotite-andesine-quartz gneiss. Granular: tourmaline in hand specimen |
| Locality details | Colvister, 420 yds N from school |
| 50k map sheet | Yell (130) |
| Map reference | HU 513 974 |
| 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
S30634
