BGS mineralogy and petrology collection record

Sample number S15566
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Basalt, Porphyritic'
Stratigraphy Not entered
Comments Bith Bheinn lava, Central Type; Memoir, p. 131
Locality details N spur of Bith Bheinn, 1 mile W 15 deg N of Gortenbuie
50k map sheet Mull (44)

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Map reference NM 5789 3466
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


S15566

Cross Polarized, S15566

Plane Polarized, S15566

Plane Polarized, S15566