BGS mineralogy and petrology collection record

Sample number	E10632; COLLNO33;
Sample Donor	Blake,Professor
Rock name	'Original entry: Sodium Felsite'
Stratigraphy	Not entered
Comments	see mem.geology of Anglesey Yr 1919 cf p 534 cf E10634 Albite, Quartz etc. Calcitized phenocrysts in a mosaic of Feldspar matrix Palaeozoic intrusions
Locality details	Pant-yr-Eglwys
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 298 920
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.