BGS mineralogy and petrology collection record

Sample number	E47030; COLLNONGB65;
Sample Donor	Berridge,N.G.
Rock name	'Original entry: Andesite'
Stratigraphy	Not entered
Comments	Massive porphyritic ? andesite. cf. E47028
Locality details	SW. slope of Llwtmor, 1830 m. at 121 deg. from Aber Falls.
50k map sheet	Denbigh (107) View images in GeoScenic related to 'Denbigh' View the geology near 'Denbigh'
Map reference	SH 6839 6908
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.