BGS mineralogy and petrology collection record

Sample number	E8459; COLLNO120;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Conglomerate W. Schist Fragment'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey c.f.pp.440-2.fig.202. Ordovician. Arenig. Refer to ledger for pencil notes. Mudstone with fragments of gneiss, adjoining a gran-mass? [Tywyn Ridge is crossed out on loose she
Locality details	West shore of Llyn Traphwll
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 321 770
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.