BGS mineralogy and petrology collection record

Sample number S7499; S7499/a;
Sample Donor Gunn, W.
Rock name 'Original entry: Quartz-Oligoclase-Biotite (Segregation Vein)'
Stratigraphy Not entered
Comments See Mem. Sh. 92, p. 71
Locality details Footpath in wood , side of Allt a'Bhraighe, 170 yds E of milestone 9 from Ullapool
50k map sheet Inverbroom (92)

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Map reference NH 196 814
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


S7499

Cross Polarized, S7499

Plane Polarized, S7499

Plane Polarized, S7499


S7499/a

Cross Polarized, S7499/a

Plane Polarized, S7499/a

Plane Polarized, S7499/a