BGS mineralogy and petrology collection record

Sample number S3581
Sample Donor Geikie,A.
Rock name 'Original entry: Olvine-Dolerite'
Stratigraphy Not entered
Comments Lava or dyke; ophitic purple-edged augite
Locality details Shore of Loch na Keal, 2 miles W of Knock
50k map sheet Mull (44)

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Map reference NM 515 373
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


S3581

Cross Polarized, S3581

Plane Polarized, S3581

Plane Polarized, S3581