BGS mineralogy and petrology collection record

Sample number S29420; COLLNODH2382;
Sample Donor Haldane,D.
Rock name 'Original entry: Quartz-Feldspar Porphyry'
Stratigraphy Not entered
Comments Quartz porphyry; W Shetland Mem, p. 255
Locality details Muckle Roe, ravine 900 yds E of Mill Loch
50k map sheet Central Shetland (128)

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Map reference HU 326 659
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


S29420

Cross Polarized, S29420

Plane Polarized, S29420

Plane Polarized, S29420