BGS mineralogy and petrology collection record

Sample number S13850; S13850/A;
Sample Donor Clough, C.T.
Rock name 'Original entry: Tourmaline Schist'
Stratigraphy Not entered
Comments Mull Pre-Tertiary Mem, p. 14; PGA Vol . 97(3), pp. 250-251
Locality details 850 ft slightly S of W of Dun nan Gheird
50k map sheet Colonsay (35)

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Map reference NM 4035 1888
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


S13850

Cross Polarized, S13850

Plane Polarized, S13850

Plane Polarized, S13850


S13850/A

Cross Polarized, S13850/A

Plane Polarized, S13850/A

Plane Polarized, S13850/A