BGS mineralogy and petrology collection record

Sample number	E8463; COLLNO124;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Hornblende Gneiss'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey c.f.p.325.fig.202. Mona Complex. The Gneisses. [Tywyn Ridge is crossed out on loose sheet with samples] Base of Palaeozoics. Hornblende gneiss, but in No.'s 8161-4 much deform
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.