BGS mineralogy and petrology collection record

Sample number	E11050; COLLNO131;
Sample Donor	Matley, C.A
Rock name	'Original entry: Albitic Dolerite.'
Stratigraphy	Not entered
Comments	Palaeozoic Intrusions. See Mem.Geol.of Anglesey.p.531. Boundary sill. Two generations of albite. Fault dyke. Altered coarse granular dolerite.
Locality details	Near Orseddgoch, W.of Mynydd-y-Garn
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 305 905
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.