BGS mineralogy and petrology collection record

Sample number	E63673; COLLNOKB673;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Ash Flow Tuff'
Stratigraphy	Not entered
Comments	Analysis suggests intermediate composition(GROUP= )(FORM= Nant Ffrancon Fm.)(MEMB= Y Glog Unit 2.)(IE=E)(TEXTURE=
Locality details	Tremadoc
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 5613 4095
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.