BGS mineralogy and petrology collection record

Sample number E61623; COLLNOMH1537;
Sample Donor Howells,M.F.
Rock name Tuff, Rhyolitic .
Stratigraphy Not entered
Comments Acid tuff
Locality details Tyran Mawr
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SN 6820 1133
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, E61623

Plane Polarized, E61623

Plane Polarized, E61623