BGS mineralogy and petrology collection record
| Sample number | S28822 |
|---|---|
| Sample Donor | Macgregor,A.G. |
| Rock name | 'Original entry: Biotite Granodiorite ?Porphyry' |
| Stratigraphy | Not entered |
| Comments | Fine-grained porphyritic biotite granite. Part of splitting sheet or dyke (up to 100 yds broad) cutting granodiorite |
| Locality details | Beside burn 2450 yds E 35 deg N from spot ht 1156 ft Lochan Dubh |
| 50k map sheet | Tobermory (52) |
| Map reference | NM 8056 5817 |
| 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
S28822
