BGS mineralogy and petrology collection record
| Sample number | S21730; S21730/A; |
|---|---|
| Sample Donor | Macgregor,A.G. |
| Rock name | 'Original entry: Pale Rusty-Weathering Biotite Gneiss (?Paragneiss)' |
| Stratigraphy | Not entered |
| Comments | Pale rusty-weathering biotite gneiss (?sediment) associated with black hornblende gneiss with some garnets |
| Locality details | Coast 325 yds E 35 deg N from northern extremity of Eilean Ghreasamuill |
| 50k map sheet | Tiree (42) |
| Map reference | NL 9371 4462 |
| 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
S21730
S21730/A
