BGS mineralogy and petrology collection record
| Sample number | S39499; S39499/A; |
|---|---|
| Sample Donor | Macgregor,A.G. |
| Rock name | 'Original entry: Biotite Tonalite' |
| Stratigraphy | Not entered |
| Comments | Biotite tonalite; irrregular mass (some yards across locally) that invades schist (?less pure than S. 39498) |
| Locality details | Rudha an t-Sabhail, 505 ft W from granite (tronalite) contact |
| 50k map sheet | Tobermory (52) |
| Map reference | NM 7720 5994 |
| 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
S39499
S39499/A
