BGS mineralogy and petrology collection record

Sample number E63219; COLLNOKB219;
Sample Donor Not entered
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments (GROUP= Llewelyn Volcanic Group)(FORM= Conwy Rhyolite Fm.)(MEMB= No.4 unit.)(IE=E)(TEXTURE=
Locality details Foel Lwyd
50k map sheet Bangor (106)

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View the geology near 'Bangor'

Map reference SH 7172 7256
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


E63219

Cross Polarized, E63219

Plane Polarized, E63219

Plane Polarized, E63219