BGS mineralogy and petrology collection record

Sample number S13891
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Variant Of Mull Tholeiite'
Stratigraphy Not entered
Comments Probably lava or sill; rich in augite
Locality details Eilean Glasa
50k map sheet Mull (44)

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Map reference NM 5451 4512
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


S13891

Cross Polarized, S13891

Plane Polarized, S13891

Plane Polarized, S13891