BGS mineralogy and petrology collection record

Sample number S30976
Sample Donor Wilson, George Victor
Rock name 'Original entry: Perlite, Quartz-K-Feldspar-Phyric'
Stratigraphy Not entered
Comments Felsite, argillised
Locality details Unifirth, 0.75 mile NNE of Mill Loch
50k map sheet West Shetland ? (127)

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Map reference HU 286 565
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


S30976

Cross Polarized, S30976

Plane Polarized, S30976

Plane Polarized, S30976