BGS mineralogy and petrology collection record

Sample number	E52284; COLLNOIPS9;
Sample Donor	Stevenson,I.P.
Rock name	Not entered
Stratigraphy	Not entered
Comments	?Cambrian, brown, weathered ?Tuff 8m thick.
Locality details	Quarry, 595 m E 5 deg S of Tyddyn Heilyn
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 5764 6844
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.