BGS mineralogy and petrology collection record

Sample number	E61107; COLLNOMH1458;
Sample Donor	Howells,M.F.
Rock name	Tuff. 'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Coarse ? Dolerite
Locality details	E of Clynnau Cregennen
50k map sheet	Barmouth (149) View images in GeoScenic related to 'Barmouth' View a geological map near 'Barmouth'
Map reference	SH 6692 1424
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.