BGS mineralogy and petrology collection record

Sample number E63217; COLLNOKB217;
Sample Donor Not entered
Rock name Tuff. 'Original entry: Quartz Latite Ash Flow Tuff'
Stratigraphy Not entered
Comments Overlies thin mudstone of Conwy Rhyolite Fm.(GROUP= Llewelyn Volcanic Group)(FORM= Foel Fras Volcanic Complex)(MEMB= .)(IE=E)(TEXTURE=
Locality details Foel Lwyd
50k map sheet Bangor (106)

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Map reference SH 7181 7248
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, E63217

Plane Polarized, E63217

Plane Polarized, E63217