BGS mineralogy and petrology collection record

Sample number S28243
Sample Donor Read, H.H.
Rock name 'Original entry: Micaceous Quartzite, Garnetiferous'
Stratigraphy Not entered
Comments Quartzofeldspathic gneiss of Valla Field group; quartz granulitic
Locality details S of Berry Knowe, Valla Field
50k map sheet Unst (131)

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Map reference HP 586 069
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


S28243

Cross Polarized, S28243

Plane Polarized, S28243

Plane Polarized, S28243