BGS mineralogy and petrology collection record

Sample number S45390; COLLNOYW83;
Sample Donor May,F.
Rock name 'Original entry: Biotite Tonalite'
Stratigraphy Not entered
Comments 1 ft dyke cutting diorite
Locality details 600 yds N 40 deg W of house at Aultnaslat
50k map sheet Loch Eil (62)

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Map reference NH 1250 0038
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


S45390

Cross Polarized, S45390

Plane Polarized, S45390

Plane Polarized, S45390