BGS mineralogy and petrology collection record

Sample number	E10641; COLLNO42;
Sample Donor	Blake,Professor
Rock name	'Original entry: Gniess'
Stratigraphy	Not entered
Comments	see mem.geology of Anglesey Yr 1919 cf p 292-3 Similar but much composed. Deformation by later movement of the Mona Complex The Gneisses
Locality details	Apparently near N. margin of Gader Inlier Bottom of pen-bryn-yr-Eglwys by fault
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 294 924
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.