BGS mineralogy and petrology collection record

Sample number E492; E493; MR773;
Sample Donor Not entered
Rock name 'Original entry: Nodular Rhyolite'
Stratigraphy Not entered
Comments 377/41, B/184
Locality details Y-glyder Fawr, Llanberis, Caernarvonshire
50k map sheet Bangor (106)

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Map reference SH 57 59
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


E492

Cross Polarized, E492

Plane Polarized, E492

Plane Polarized, E492


E493

Cross Polarized, E493

Plane Polarized, E493

Plane Polarized, E493