BGS mineralogy and petrology collection record

Sample number	E10927; COLLNO8;
Sample Donor	Matley, C.A
Rock name	'Original entry: Probably Quartzite'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 308 Probably crushed and re-cemented Quartzite Ruf like Mars of Silicios rock in Burn Conglomerate Mona Complex
Locality details	Penrhyn near - Cemmaes
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 367 937
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.