BGS mineralogy and petrology collection record

Sample number	E66216; COLLNOWPR65;
Sample Donor	Pratt, W.
Rock name	Tuff. 'Original entry: Tuff'
Stratigraphy	Not entered
Comments	Upper Acid Group.
Locality details	500 m. NW. of spot height 766 m. (Craig Cwm Amarch).
50k map sheet	Barmouth (149) View images in GeoScenic related to 'Barmouth' View the geology near 'Barmouth'
Map reference	SH 7016 1212
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.