BGS mineralogy and petrology collection record

Sample number S218
Sample Donor Geikie,A.
Rock name 'Original entry: Felsite Or Rhyolite?'
Stratigraphy Not entered
Comments Much silicified F "Tuff"
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


S218

Cross Polarized, S218

Plane Polarized, S218

Plane Polarized, S218