BGS mineralogy and petrology collection record

Sample number S13892
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Porphyritic Augite Andesite; Tholeiite'
Stratigraphy Not entered
Comments Lava, or probably sill
Locality details Top of scarp 200 yds NW of trig pt 1201 ft Maol Buidhe
50k map sheet Mull (44)

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Map reference NM 6214 4147
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


S13892

Cross Polarized, S13892

Plane Polarized, S13892

Plane Polarized, S13892