BGS mineralogy and petrology collection record

Sample number	E11393; COLLNO173;
Sample Donor	Greenly,E.
Rock name	'Original entry: Powder Of Acid Gneiss. Sillimanite'
Stratigraphy	Not entered
Comments	Mona Complex. The Gneisses. See Mem.Geol.of Anglesey.p.322. Quartz, sillimanite Residues
Locality details	800ft.B.M.132.5. In Holyhead road
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 371 767
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.