BGS mineralogy and petrology collection record

Sample number	E10709; COLLNO110;
Sample Donor	Blake,Professor
Rock name	'Original entry: Biotite Hornfels'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesy pp 335-6 Both Micas. Probably Chloritoids. Blastopsammitic after Gritty Shale Mona Complex Plutonic Intrusion
Locality details	Bodafon W. side
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 474 871
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.