BGS mineralogy and petrology collection record

Sample number	E48500; COLLNOLA502;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Volcanic Rock'
Stratigraphy	Not entered
Comments	Basic intrusive, ?lacolith
Locality details	Road cutting of Ty'n y Bernhas
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7346 2263
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.