BGS mineralogy and petrology collection record

Sample number E64250; COLLNOKB1250;
Sample Donor Not entered
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments Possibly Hafod y Porth Rhyolite(GROUP= )(FORM= )(MEMB= .)(IE=E)(TEXTURE=Flow banded
Locality details Mynydd Sygun
50k map sheet Snowdon (119)

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Map reference SH 595 475
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, E64250

Plane Polarized, E64250

Plane Polarized, E64250