BGS mineralogy and petrology collection record

Sample number	E38735; COLLNOCE28;
Sample Donor	Evans,C.D.R.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Crystal rich tuff, about 10 ft from top of Lower Rhyolitic tuffs of the Snowdon V.S
Locality details	200 yds 317 deg from Roman Bridge Halt
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 7114 5151
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.