BGS mineralogy and petrology collection record

Sample number S13880
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Granophyre'
Stratigraphy Not entered
Comments Outer granite; Memoir, p. 350
Locality details Allt nan Searmoin, about half way above bridge
50k map sheet Mull (44)

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Map reference NM 5722 4176
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


S13880

Cross Polarized, S13880

Plane Polarized, S13880

Plane Polarized, S13880