BGS mineralogy and petrology collection record

Sample number S25869
Sample Donor Macgregor,A.G.
Rock name 'Original entry: ?Acid Porphyrite Or Plagiophyre'
Stratigraphy Not entered
Comments ?Acid porphyrite or plagiophyre, grey porphyrite intrusion into L.O.R.S.
Locality details Knockskae, 820 yards W 10 deg S from Knockskae Farm
50k map sheet Ayr (14)

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Map reference NS 365 013
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


S25869

Cross Polarized, S25869

Plane Polarized, S25869

Plane Polarized, S25869