BGS mineralogy and petrology collection record

Sample number	E573; MR711;
Sample Donor	Not entered
Rock name	'Original entry: Black Slte And Tuff'
Stratigraphy	Not entered
Comments	Arenig. 241/41, B/48
Locality details	Moel Offrwm, nr. Dolgelly [Dolgellau], Merionethshire
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 72 17
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.