BGS mineralogy and petrology collection record

Sample number S21618; S21618/A;
Sample Donor Simpson,J.B.
Rock name 'Original entry: Augite-Biotite Spessartite'
Stratigraphy Not entered
Comments Dyke chilled against and on both sides of S. 21619, which it cuts
Locality details 100 yds N of Cul Sgathain
50k map sheet Tiree (42)

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Map reference NL 9860 3973
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


S21618

Cross Polarized, S21618

Plane Polarized, S21618

Plane Polarized, S21618


S21618/A

Cross Polarized, S21618/A

Plane Polarized, S21618/A

Plane Polarized, S21618/A