BGS mineralogy and petrology collection record

Sample number E17785
Sample Donor Home Office
Rock name Tuff. 'Original entry: Quartz Keratophyric Tuff'
Stratigraphy Not entered
Comments Not entered
Locality details Llanwrtyd (Dolcoed) 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, E17785

Plane Polarized, E17785

Plane Polarized, E17785