BGS mineralogy and petrology collection record

Sample number	E50163; COLLNONGB294;
Sample Donor	Berridge,N.G.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Very massive ?porphy. andesite.
Locality details	1380 m 243 deg from Llyn Anafon Spillway
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View the geology near 'Bangor'
Map reference	SH 6862 6924
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.