BGS mineralogy and petrology collection record

Sample number S30381; S30381/A; S30381/B; COLLNOTR141;
Sample Donor Robertson,T.
Rock name 'Original entry: Ganretiferous Muscovite-Biotite Gneiss, Sheared'
Stratigraphy Not entered
Comments Garnetiferous augen granite; K and SiO2 metasomatised
Locality details S5. Inner Holm of Skaw, W side
50k map sheet Central Shetland (128)

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Map reference HU 599 676
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


S30381

Cross Polarized, S30381

Plane Polarized, S30381

Plane Polarized, S30381


S30381/A

Cross Polarized, S30381/A

Plane Polarized, S30381/A

Plane Polarized, S30381/A


S30381/B

Cross Polarized, S30381/B

Plane Polarized, S30381/B

Plane Polarized, S30381/B