BGS mineralogy and petrology collection record

Sample number	E10733; COLLNO134;
Sample Donor	Blake,Professor
Rock name	'Original entry: Hornblende-Gneiss'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey pp 324-5 Hornblende, Albite sphere & Quartz The Gneisses
Locality details	W. of Penyesfyn near Mynydd mawr
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 409 822
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.