BGS mineralogy and petrology collection record

Sample number	E60573; COLLNOBRM454;
Sample Donor	Merriman,R.J.
Rock name	Gabbro. 'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Dolerite
Locality details	Minffordd Qry. Nr. Porthmadog
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map 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.