BGS mineralogy and petrology collection record

Sample number	E8559; COLLNO583;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Sodium Felsite'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey c.f.p529. Palaeozoic intrusion.
Locality details	Near the "B"of "Byyn-ald",W.of Plas Einion
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 384 769
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.