BGS mineralogy and petrology collection record

Sample number	E45890; COLLNOLA273;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Volcanic Rock'
Stratigraphy	Not entered
Comments	Extrusive
Locality details	180 yds 331 deg of Llwyn
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7318 1828
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.