BGS mineralogy and petrology collection record

Sample number	E11076; COLLNO157;
Sample Donor	Matley, C.A
Rock name	'Original entry: Medium Tuff.'
Stratigraphy	Not entered
Comments	Mona Complex. Church Bay Tuffs. See Mem.Geol.of Anglesey.p.285. Epidosite matrix. Fragmentof felsite. Qtz..felspar & phyllitic fragments.
Locality details	Porth-y-Cychod
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 299 892
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.