BGS mineralogy and petrology collection record

Sample number E20857; COLLNORB1758;
Sample Donor Road Research Laboratory
Rock name Trachytic-Rock. 'Original entry: Quartz Keratophyre'
Stratigraphy Not entered
Comments Not entered
Locality details Llanelwedd Qry. 1 ml NE of Builth Wells
50k map sheet Builth (196)

View images in GeoScenic related to 'Builth'

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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, E20857

Plane Polarized, E20857

Plane Polarized, E20857