BGS mineralogy and petrology collection record

Sample number S4622
Sample Donor Gunn, W.
Rock name 'Original entry: Porphyritic Dolerite'
Stratigraphy Not entered
Comments Porphyritic dolerite, trap
Locality details Barr Point, N of Dunagoil Bay, South Bute
50k map sheet Arran (Millport) (21)

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Map reference NS 082 539
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


S4622

Cross Polarized, S4622

Plane Polarized, S4622

Plane Polarized, S4622