BGS mineralogy and petrology collection record

Sample number	E11636; COLLNO4939; NEGM 1174;
Sample Donor	Howe,J.A.
Rock name	'Original entry: Quartzite'
Stratigraphy	Not entered
Comments	See M.G.S.Min.Res.Vol.V1 2nd.Edit. 1920 p.121. See M.G.S.Min.Res.Vol.XV1, 1920 pp 22-3 LV pp 8, 3W Mona Complex. Holyhead Qtzite. Refactorys See also PET VOL XVI p73
Locality details	Holyhead Silica Works
50k map sheet	South Stack (92) View images in GeoScenic related to 'South Stack' View a geological map near 'South Stack'
Map reference	SH 227 833
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.