BGS mineralogy and petrology collection record

Sample number S39520
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Biotite Granodiorite'
Stratigraphy Not entered
Comments "Granodiorite" 2 in from edge of large siliceous schist enclosed mass
Locality details 1270 yds W 12 deg S of spot ht 1116 ft Taobh Dubh
50k map sheet Tobermory (52)

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View the geology near 'Tobermory'

Map reference NM 7752 5676
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


S39520

Cross Polarized, S39520

Plane Polarized, S39520

Plane Polarized, S39520