BGS mineralogy and petrology collection record

Sample number	E10833; COLLNO234;
Sample Donor	Blake,Professor
Rock name	'Original entry: Fine Mosaic Rock'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 328 Fine Quartz Felspar, Mica matrix. Nature of Horizon uncertain ? ?
Locality details	Near top of Porth Lygan (?Helygen)
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 491 908
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.