BGS mineralogy and petrology collection record

Sample number	E60574; COLLNOBRM455;
Sample Donor	Merriman,R.J.
Rock name	'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Sheared dolerite
Locality details	Minffordd Qry. Nr. Porthmadog
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 593 392
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.