BGS mineralogy and petrology collection record

Sample number S39497
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Cf. Biotite Tonalite'
Stratigraphy Not entered
Comments Cf. biotite tonalite
Locality details Rudha an t-Sabhail, 470 ft W from granite (tronalite) contact
50k map sheet Tobermory (52)

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Map reference NM 7721 5994
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


S39497

Cross Polarized, S39497

Plane Polarized, S39497

Plane Polarized, S39497