BGS mineralogy and petrology collection record

Sample number E63221; COLLNOKB221;
Sample Donor Not entered
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments (GROUP= Llewelyn Volcanic Group)(FORM= Conwy Rhyolite Fm.)(MEMB= No.2 unit.)(IE=E)(TEXTURE=F-b, slight brecc.
Locality details Foel Lwyd, above sheepfold
50k map sheet Bangor (106)

View images in GeoScenic related to 'Bangor'

View a geological map near 'Bangor'

Map reference SH 7166 7270
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, E63221

Plane Polarized, E63221

Plane Polarized, E63221