BGS mineralogy and petrology collection record

Sample number S28818
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Biotite Granodiorite, Near Biotite Quartz-Diorite'
Stratigraphy Not entered
Comments Granodiorite modified at contact with inclusion of foliated lamprophyre; note biotite and absence of pink feldspar
Locality details Coast 480 yds E 20 deg N of Eilean a' Mhuirich
50k map sheet Tobermory (52)

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Map reference NM 8044 6102
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


S28818

Cross Polarized, S28818

Plane Polarized, S28818

Plane Polarized, S28818