BGS mineralogy and petrology collection record

Sample number	E64400; COLLNOTL31;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy	Not entered
Comments	Top (approx. 40m above base) of ash-flow unit(GROUP= Snowdon Volcanic Group)(FORM= Lower Crafnant Volc. Fm.)(MEMB= No.3 Tuff.)(IE=E)(TEXTURE=
Locality details	Creigiau Gleision, Cowlyd
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 7323 6206
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.