BGS mineralogy and petrology collection record
| Sample number | S18481 |
|---|---|
| Sample Donor | Tait,D. |
| Rock name | 'Original entry: Subgranular Portion Of Tholeiite' |
| Stratigraphy | Not entered |
| Comments | Sapphire-bearing sill; Memoir, p. 273; contains free quartz; feldspars with acid margins |
| Locality details | Rubh' a' Chromain, N side of promontory |
| 50k map sheet | Mull (44) |
| Map reference | NM 5237 2031 |
| 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
S18481
