BGS mineralogy and petrology collection record

Sample number	MR25317; COLLNO1b;
Sample Donor	White,D.E.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Upper Ashes of Arenig, Ordovician
Locality details	In Diverion Tunnel (Tryweryn Reservoir) 260yds at 331deg. from Ty'n-y-cerrig Farm near Bala
50k map sheet	Corwen (120) View images in GeoScenic related to 'Corwen' View the geology near 'Corwen'
Map reference	SH 8773 3998
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions