BGS mineralogy and petrology collection record

Sample number	E64261; COLLNOKB1261;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Tuff'
Stratigraphy	Not entered
Comments	Mass flow (? debris flow ) unit. Above basalt above KB1260.(GROUP= Snowdon Volcanic Group)(FORM= Upper Rhyolitic Tuff Fm.)(MEMB= .)(IE=E)(TEXTURE=Well bedded
Locality details	Crib y ddysgl
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 6119 5514
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.