BGS mineralogy and petrology collection record
| Sample number | S21397 |
|---|---|
| Sample Donor | Simpson,J.B. |
| Rock name | 'Original entry: Biotite Granulite; Oligoclase, Quartz, Some Green Hornblende' |
| Stratigraphy | Not entered |
| Comments | Typical biotite granite gneiss from Gunna; Memoir, p. 19 |
| Locality details | W end of Gunna |
| 50k map sheet | Coll (51) |
| Map reference | NM 0994 5094 |
| 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
S21397
