BGS mineralogy and petrology collection record

Sample number E64205; COLLNOKB1205;
Sample Donor Not entered
Rock name Tuff. 'Original entry: Acid Tuff'
Stratigraphy Not entered
Comments 18m below top of unit(GROUP= )(FORM= Nant Ffrancon Fm.)(MEMB= Clogwyn Gottal Tuff.)(IE=E)(TEXTURE=
Locality details Nant Gwynant
50k map sheet Snowdon (119)

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Map reference SH 6383 4902
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


Cross Polarized, E64205

Plane Polarized, E64205

Plane Polarized, E64205