BGS mineralogy and petrology collection record

Sample number	E8470; COLLNO131;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Fragments Of Gneiss. Arkose.'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey c.f.p.444. Ordovician. Arenig. This slide is all in a garnetiferous biotite gneiss which must be a pebble in the arenig conglomerate
Locality details	Ridge S.of Clymwr
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 369 858
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.