BGS mineralogy and petrology collection record

Sample number	E38740; COLLNOCE33;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Coarse lithic crystal tuff. 60-65 ft from base.
Locality details	540 yds 3 deg from Tyn y Ddol Qry.
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 7007 5191
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.