BGS mineralogy and petrology collection record

Sample number E62973; COLLNOMH1608;
Sample Donor Howells,M.F.
Rock name 'Original entry: Acid Tuff'
Stratigraphy Not entered
Comments Clast rich acid tuff, 4 m. above base.
Locality details NNW. of Llyn Cafr.
50k map sheet Barmouth (149)

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Map reference SH 7074 1498
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


E62973

Cross Polarized, E62973

Plane Polarized, E62973

Plane Polarized, E62973