BGS mineralogy and petrology collection record

Sample number S40444
Sample Donor Greig,D.C.
Rock name Not entered
Stratigraphy Not entered
Comments Porphyritic finer coarse granite and very coarsely weathered coarse granite
Locality details 1050 yards SSE of An Tunna; 1900 yards W by S of Cnocan Donna
50k map sheet Arran (Millport) (21)

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Map reference NR 981 461
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


S40444

Cross Polarized, S40444

Plane Polarized, S40444

Plane Polarized, S40444