BGS mineralogy and petrology collection record

Sample number S13495
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Gneiss'
Stratigraphy Not entered
Comments Colonsay Mem, pp. 11-12
Locality details Leac Buidhe, Colonsay
50k map sheet Colonsay (35)

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Map reference NM 424 002
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


S13495

Cross Polarized, S13495

Plane Polarized, S13495

Plane Polarized, S13495