BGS mineralogy and petrology collection record

Sample number E66217; COLLNOWPR66;
Sample Donor Pratt, W.
Rock name Tuff. 'Original entry: Tuff'
Stratigraphy Not entered
Comments Upper Acid Group.
Locality details 330 m. NW. of cairn at summit of Craig Cwm Amarch.
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SH 7078 1229
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, E66217

Plane Polarized, E66217

Plane Polarized, E66217