BGS mineralogy and petrology collection record

Sample number	E26722; COLLNOA291;
Sample Donor	Whitehead,T.H.
Rock name	'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Coarse dolerite
Locality details	Y Waun, Ynyscynhaiarn
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 540 390
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.