BGS mineralogy and petrology collection record

Sample number	E63665; COLLNOKB665;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy	Not entered
Comments	55m above base(GROUP= Nantmor Group)(FORM= Pitts Head Tuff Fm.)(MEMB= Upper Flow Unit.)(IE=E)(TEXTURE=Welded
Locality details	Cwmystradllyn
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 5582 4569
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.