BGS mineralogy and petrology collection record

Sample number S494; COLLNO1667;
Sample Donor Macconachie,A.F.
Rock name 'Original entry: Trachyte F'
Stratigraphy Not entered
Comments "Porphyrite"
Locality details Quarry, S side of road between Upper Braid and Liberton Tower
50k map sheet Edinburgh (32)

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Map reference NT 2607 6965
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


S494

Cross Polarized, S494

Plane Polarized, S494

Plane Polarized, S494