BGS mineralogy and petrology collection record

Sample number	E25304; COLLNO13/NE37;
Sample Donor	Stevenson,I.P.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Dolerite
Locality details	Bed of Afon Porth-LLwyd; 900 yds. NNE of Coed-Ty-Mawa
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 762 675
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.