BGS mineralogy and petrology collection record

Sample number	E11394; COLLNO174;
Sample Donor	Greenly,E.
Rock name	'Original entry: Powder Of Acid Gneiss. Sillimanite Garnet Gneiss'
Stratigraphy	Not entered
Comments	Mona Complex. The Gneisses. See Mem.Geol.of Anglesey.p.322. Sillimanite, garnet, etc. Residues
Locality details	SW.of Clegyr Mawr. (small Hb. Felspar boss)
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 378 774
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.