BGS mineralogy and petrology collection record

Sample number	E10998; COLLNO79;
Sample Donor	Matley, C.A
Rock name	'Original entry: Cherty Mudstone'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 457 Siliceous matrix seems colloidal..? Carbon ?? Organisms in junction with green series Ordovician Arenig
Locality details	Engan Las [Gae engan]
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 324 904
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.