BGS mineralogy and petrology collection record

Sample number	E8423; COLLNO27;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Hornfels.'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey cf p.333. Mona Complex. ?Plutonic Intrusion. Microcrystalline.Resembles ???????? type
Locality details	NW.of Gwalchmai
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 388 764
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.