BGS mineralogy and petrology collection record

Sample number	E63203; COLLNOKB203;
Sample Donor	Not entered
Rock name	Rhyolite. 'Original entry: Rhyolite'
Stratigraphy	Not entered
Comments	Columnar jointing(GROUP= Llewelyn Volcanic Group)(FORM= Conwy Rhyolite Fm.)(MEMB= .)(IE=E)(TEXTURE=Fine, massive, f-b
Locality details	Pen Maen Bach Point
50k map sheet	Llandudno (94) View images in GeoScenic related to 'Llandudno' View a geological map near 'Llandudno'
Map reference	SH 7450 7848
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.