BGS mineralogy and petrology collection record

Sample number E17536; COLLNORB1546;
Sample Donor Road Board
Rock name Tuff. 'Original entry: Keratophyric Tuff'
Stratigraphy Not entered
Comments Middle bed
Locality details Llanwrtyd Qry. Llanwrtyd
50k map sheet Builth (196)

View images in GeoScenic related to 'Builth'

View a geological map near 'Builth'

Map reference
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, E17536

Plane Polarized, E17536

Plane Polarized, E17536