BGS mineralogy and petrology collection record

Sample number S31141; S31141/A; S31141/B;
Sample Donor Wilson, George Victor
Rock name 'Original entry: Quartz-Diorite, Medium-Grained'
Stratigraphy Not entered
Comments Diorite
Locality details Coast 0.25 mile NNW of Culswick Broch
50k map sheet Foula (125)

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Map reference HU 252 451
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


S31141

Cross Polarized, S31141

Plane Polarized, S31141

Plane Polarized, S31141


S31141/A

Cross Polarized, S31141/A

Plane Polarized, S31141/A

Plane Polarized, S31141/A


S31141/B

Cross Polarized, S31141/B

Plane Polarized, S31141/B

Plane Polarized, S31141/B