BGS mineralogy and petrology collection record

Sample number S10156; COLLNO346;
Sample Donor Gunn,A.G.
Rock name 'Original entry: Biotite Granite'
Stratigraphy Not entered
Comments Basic variation; good feldspar intergrowths; outlying part of Fearn granite of Sheet 93
Locality details On shore,500 yds SE of Ardgay milestone at Bonar Bridge Station
50k map sheet Lairg (102)

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Map reference NH 604 900
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


S10156

Cross Polarized, S10156

Plane Polarized, S10156

Plane Polarized, S10156