BGS mineralogy and petrology collection record

Sample number	E11058; COLLNO139;
Sample Donor	Matley, C.A
Rock name	'Original entry: Fine Tuff. Phyllite.'
Stratigraphy	Not entered
Comments	Mona Complex. Church Bay Tuffs. See Mem.Geol.of Anglesey. pp.287:58. Brecciform. Anamorphian very low. Silicification. Has the characters of a chert. (Conglom ?? Gandines & Reynolds )
Locality details	N.of Hen-Gapel, Mynydd-y-Garn
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 316 904
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.