BGS mineralogy and petrology collection record

Sample number	E10959; COLLNO40;
Sample Donor	Matley, C.A
Rock name	'Original entry: Cleaved Grit'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 309 Quartz, White Mica,Pebbles of foliated Gwna Quartzite: also mud ? Ordovician Glenkiln Beds
Locality details	E. of Porth Wen Bay
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 408 946
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.