BGS mineralogy and petrology collection record

Sample number S435; COLLNO1703;
Sample Donor Macconachie,A.F.
Rock name 'Original entry: ?Trachyte (Partly Silicified)'
Stratigraphy Not entered
Comments "Porphyrite", decomposed F
Locality details Torduff Hill, Pentlands
50k map sheet Edinburgh (32)

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Map reference NT 20 67
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


S435

Cross Polarized, S435

Plane Polarized, S435

Plane Polarized, S435