BGS mineralogy and petrology collection record

Sample number S420; COLLNO1686;
Sample Donor Macconachie,A.F.
Rock name 'Original entry: Tuff Of Andesitic Or Basaltic Character'
Stratigraphy Not entered
Comments Hornstone-like rock
Locality details Top of Caerketton Hill, Pentlands
50k map sheet Edinburgh (32)

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Map reference NT 237 662
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


S420

Cross Polarized, S420

Plane Polarized, S420

Plane Polarized, S420