BGS mineralogy and petrology collection record

Sample number	E10027; COLLNO239; NEGM.1101;
Sample Donor	Greenly,E.
Rock name	'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Not entered
Locality details	900ft.NW.of Bryn-yr-Odyn
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 397 737
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.