Field name: Dolerite, close to S margin of large intrusion. Thin section: coarse-grained (<2 mm) crystalline rock, strongly altered (chloritisation), but igneous textures still clear, rock comprises feldspar graphically intergrown with quartz
Locality details
580 m 002 deg from Waen Fechan. 4.45 Km SW of Dolgellau Bridge (S End)