BGS mineralogy and petrology collection record

Sample number	E51064; COLLNODN64;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Mudstone'
Stratigraphy	Not entered
Comments	Black mudstone with tubes
Locality details	560 yds 328 deg from Glanllafar
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7342 3675
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.