BGS mineralogy and petrology collection record

Sample number S21736; S21736/A;
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Fliny-Crush Rock'
Stratigraphy Not entered
Comments Black and red type of flinty crush rock
Locality details 690 yds E 35 deg S from trig pt 388 ft Beinn Hough
50k map sheet Tiree (42)

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Map reference NL 9530 4585
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


S21736

Cross Polarized, S21736

Plane Polarized, S21736

Plane Polarized, S21736


S21736/A

Cross Polarized, S21736/A

Plane Polarized, S21736/A

Plane Polarized, S21736/A