BGS mineralogy and petrology collection record

Sample number	E65767; COLLNOGW383;
Sample Donor	Woodhall, D.G.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Tuff (top of Upper Acid Series)
Locality details	Ridge W of Mynydd Gwerngraig
50k map sheet	Barmouth (149) View images in GeoScenic related to 'Barmouth' View a geological map near 'Barmouth'
Map reference	SH 7470 1383
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.