BGS mineralogy and petrology collection record

Sample number	E38724; COLLNOCE4;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Muddy crystal rich tuffaceous rock in Snowdon V.S.
Locality details	520 yds 82 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 7068 5150
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.