BGS mineralogy and petrology collection record

Sample number	E38745; COLLNOCE38;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Vitric tuff. Middle of Lower Ryolitic Tuffs
Locality details	450 yds 183 deg from Dolwyddelan Castle
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 7216 5194
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.