BGS mineralogy and petrology collection record

Sample number E66216; COLLNOWPR65;
Sample Donor Pratt, W.
Rock name Tuff. 'Original entry: Tuff'
Stratigraphy Not entered
Comments Upper Acid Group.
Locality details 500 m. NW. of spot height 766 m. (Craig Cwm Amarch).
50k map sheet Barmouth (149)

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Map reference SH 7016 1212
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, E66216

Plane Polarized, E66216

Plane Polarized, E66216