BGS mineralogy and petrology collection record

Sample number E61951; COLLNOMH1552;
Sample Donor Howells,M.F.
Rock name Tuff, Rhyolitic .
Stratigraphy Not entered
Comments Basalt ?
Locality details 1 Km ENE of Tyran Mawr
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SN 6910 1134
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, E61951

Plane Polarized, E61951

Plane Polarized, E61951