BGS mineralogy and petrology collection record

Sample number	E63676; COLLNOKB676;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Tuff'
Stratigraphy	Not entered
Comments	10m above base at Ynys Cerrig-duon(GROUP= )(FORM= Nant Ffrancon Fm.)(MEMB= Y Glog Unit 1.)(IE=E)(TEXTURE=Welded
Locality details	Tremadoc
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 5730 3910
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.