BGS mineralogy and petrology collection record

Sample number S28820
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Baked Granitic Rock'
Stratigraphy Not entered
Comments Baked granitic rock (probably S. 28821 type) at junction with quartz-dolerite
Locality details Allt na Cloiche 1720 yds N 20 deg E of Lochan Dubh
50k map sheet Tobermory (52)

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Map reference NM 8138 5859
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


S28820

Cross Polarized, S28820

Plane Polarized, S28820

Plane Polarized, S28820