BGS mineralogy and petrology collection record

Sample number E64394; COLLNOTL25;
Sample Donor Not entered
Rock name Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy Not entered
Comments Near top (21m above base) of ash-flow unit(GROUP= Snowdon Volcanic Group)(FORM= Lower Crafnant Volc. Fm.)(MEMB= No.1 Tuff.)(IE=E)(TEXTURE=
Locality details Creigiau Gleision, Cowlyd
50k map sheet Bangor (106)

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Map reference SH 7273 6168
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


E64394

Cross Polarized, E64394

Plane Polarized, E64394

Plane Polarized, E64394