BGS mineralogy and petrology collection record

Sample number S27745
Sample Donor Read, H.H.
Rock name 'Original entry: Quartz-Muscovite Schist'
Stratigraphy Not entered
Comments Diaphthoretic staurolite-garnet gneiss
Locality details Byre of Scord, Valla Field
50k map sheet Unst (131)

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Map reference HP 587 072
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


S27745

Cross Polarized, S27745

Plane Polarized, S27745

Plane Polarized, S27745