BGS mineralogy and petrology collection record

Sample number	E11077; COLLNO158;
Sample Donor	Matley, C.A
Rock name	'Original entry: Deformed Tuff. Felspathic Grit.'
Stratigraphy	Not entered
Comments	Mona Complex. Church Bay Tuffs. See Mem.Geol.of Anglesey.p.286. Similar but schistose. Anamorphism low (very). Hardly any mica.
Locality details	Trwyn Gwther-fudr, Llanfaethlu
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 31 86
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.