BGS mineralogy and petrology collection record

Sample number	E46238; COLLNOLA173;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Tuff'
Stratigraphy	Not entered
Comments	? Tuff
Locality details	460 yds 263 deg from Castell Gweyn
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 8029 3503
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.