BGS mineralogy and petrology collection record

Sample number S4620
Sample Donor Gunn, W.
Rock name 'Original entry: Altered Porphyritic Basalt, Basaltic Augite Andesite'
Stratigraphy Not entered
Comments Altered porphyritic basalt, Basaltic augite andesite, trap adjoining dolerite
Locality details S of Barr Hill, S. Bute
50k map sheet Arran (Millport) (21)

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Map reference NS 096 520
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


S4620

Cross Polarized, S4620

Plane Polarized, S4620

Plane Polarized, S4620