BGS mineralogy and petrology collection record

Sample number	E10830; COLLNO231;
Sample Donor	Blake,Professor
Rock name	'Original entry: Quartzite'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 312 Epiclastic Quartz fine granoblastic matrix Mona Complex Gwna Beds
Locality details	Qy mass W. of Bull Bay
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 422 943
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.