BGS mineralogy and petrology collection record
| Sample number | S21712 |
|---|---|
| Sample Donor | Macgregor,A.G. |
| Rock name | 'Original entry: Hornblende Gneiss, Black' |
| Stratigraphy | Not entered |
| Comments | Massive dyke-like black hornblende gneiss band in grey garnetiferous hornblende gneiss |
| Locality details | Eilean Ghreasamuill, near NW corner, 1427 yds S 30 deg W from northern extremity |
| 50k map sheet | Tiree (42) |
| Map reference | NL 9333 4433 |
| 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
S21712
