BGS mineralogy and petrology collection record

Sample number	E38744; COLLNOCE37;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Muddy crystal tuff with mudstone frags in Upper Ryolitic Tuffs
Locality details	320 yds 110 deg from Dolwyddelan Castle
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 7236 5224
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.