BGS mineralogy and petrology collection record

Sample number S28491
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Quartzite'
Stratigraphy Not entered
Comments Quartzite xenolith, intimately penetrated by doleritic material, from 25-30 ft E-W dyke
Locality details 1000 yds E 2 deg S of Loch na Beirness
50k map sheet Tobermory (52)

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Map reference NM 6658 7554
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


S28491

Cross Polarized, S28491

Plane Polarized, S28491

Plane Polarized, S28491