BGS mineralogy and petrology collection record

Sample number S13877
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Felsite, Basified'
Stratigraphy Not entered
Comments Near margin of granite; Memoir, p. 350
Locality details South of Toll Doire
50k map sheet Mull (44)

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Map reference NM 5658 4145
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


S13877

Cross Polarized, S13877

Plane Polarized, S13877

Plane Polarized, S13877