BGS mineralogy and petrology collection record

Sample number S41744
Sample Donor Greig,D.C.
Rock name Not entered
Stratigraphy Not entered
Comments Brecciated granite within 6 foot clay-filled gracture probably marking junction of fine and coarse granite (on fine side)
Locality details Allt Dubh, left bank, c. 1890 yards 12.5 deg from 1881 feet triangulation point on Beinn Bhrea; 530 yards above confluence with stream of Gleann Easan Biorach
50k map sheet Arran (Millport) (21)

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Map reference NR 947 473
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


S41744

Cross Polarized, S41744

Plane Polarized, S41744

Plane Polarized, S41744