BGS mineralogy and petrology collection record

Sample number S13412
Sample Donor Craig,P.M.
Rock name 'Original entry: Tonalite'
Stratigraphy Not entered
Comments Colonsay Mem, p. 84; Mull pre-Tertiary Mem, p. 47
Locality details Eilean a' Chalmain
50k map sheet Colonsay (35)

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Map reference NM 30 17
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


S13412

Cross Polarized, S13412

Plane Polarized, S13412

Plane Polarized, S13412