BGS mineralogy and petrology collection record

Sample number S42861
Sample Donor Phemister,J.
Rock name 'Original entry: Quartz-Feldspar Porphyry'
Stratigraphy Not entered
Comments Quartz-feldspar porphyry
Locality details Top of cliffs 2350 ft 17 deg S of W of W corner of Lang Clodie Loch
50k map sheet North Shetland ? (129)

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Map reference HU 303 875
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


S42861

Cross Polarized, S42861

Plane Polarized, S42861

Plane Polarized, S42861