BGS mineralogy and petrology collection record

Sample number S421; COLLNO1689;
Sample Donor Macconachie,A.F.
Rock name 'Original entry: Olivine Basalt'
Stratigraphy Not entered
Comments Porphyrite
Locality details Quarry at Swanston Cottage, N end of Pentlands
50k map sheet Edinburgh (32)

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Map reference NT 2366 6756
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


S421

Cross Polarized, S421

Plane Polarized, S421

Plane Polarized, S421