BGS mineralogy and petrology collection record

Sample number	E30768; MR9225; COLLNOJ553;
Sample Donor	Jones,T.G.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Grey Rhyolite
Locality details	Disused Quarry., 100 yds. S of Hafod Yrhaf. 2.5 miles SW of Bangor
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 551 689
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.