BGS mineralogy and petrology collection record

Sample number	E9315
Sample Donor	Greenly,E.
Rock name	'Original entry: Porcellanite(An Mem 1931p.120) Tuff'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey.p.285. Church Bay Group. Mona Complex. See ANAL.MEM. 1931 p.120
Locality details	Summit 100ft.SW.of Clegyr Mawr, Llanshyddlad
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 300 901
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.