BGS mineralogy and petrology collection record

Sample number	E10630; COLLNO31;
Sample Donor	Blake,Professor
Rock name	'Original entry: Silaceous Band In Tuff'
Stratigraphy	Not entered
Comments	see mem.geology of Anglesey Yr 1919 cf p 285 Quartz, Albite, Chlorite,etc Unually silaceous fragments of old Schist etc Mona Complex Church Bay Tuf
Locality details	Summit over Ogo Lowry
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 300 900
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.