BGS mineralogy and petrology collection record

Sample number	E48918; COLLNONGB163;
Sample Donor	Berridge,N.G.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Weakly cleaved massive, porphyritic ?andesite
Locality details	1135 m 234 deg from the Spill point of Llyn Anafon
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 6894 6922
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.