BGS mineralogy and petrology collection record

Sample number S39468
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Microdiorite'
Stratigraphy Not entered
Comments Coarse-grained grey inclusion in porphyritic granodiorite
Locality details Coast 480 yds S 35 deg E of Ranachan
50k map sheet Tobermory (52)

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Map reference NM 7922 6103
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


S39468

Cross Polarized, S39468

Plane Polarized, S39468

Plane Polarized, S39468