BGS mineralogy and petrology collection record

Sample number	E50143; COLLNONGB274;
Sample Donor	Berridge,N.G.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Massive weakly cleaved, ?porphy andesite +xenolith
Locality details	1780 m 238deg from Llyn Anafon Spillway
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 6832 6894
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.