BGS mineralogy and petrology collection record

Sample number S39502
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Biotite Tonalite'
Stratigraphy Not entered
Comments 3-4 ft WNW biotite tonalite dyke = J. 104
Locality details Rudha an t-Sabhail, 1020 ft W from granite (tronalite) contact
50k map sheet Tobermory (52)

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Map reference NM 7710 5990
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


S39502

Cross Polarized, S39502

Plane Polarized, S39502

Plane Polarized, S39502