BGS mineralogy and petrology collection record
| Sample number | S30618 |
|---|---|
| Sample Donor | Allan,J.K. |
| Rock name | 'Original entry: Muscovite-Biotite-Oligoclase Gneiss' |
| Stratigraphy | Not entered |
| Comments | Muscovite-biotite-oligoclase gneiss. Microporphyroblastic tourmaline, affected by injection |
| Locality details | Burn of Tongafield, 280 yds NW from Heatherdale |
| 50k map sheet | Yell (130) |
| Map reference | HP 511 019 |
| 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
S30618
