BGS mineralogy and petrology collection record

Sample number	E10636; COLLNO37;
Sample Donor	Blake,Professor
Rock name	'Original entry: Felsite Or Andesite'
Stratigraphy	Not entered
Comments	see mem.geology of Anglesey Yr 1919 cf p 526 Feldspar mosaic with Porphyritic pseudomorphs Micacised & Chloritized Sm?prisms of Apetite. Prob sm? Of the intermediate Dyke
Locality details	Pen bryn-yr-Eglwys Hague locality
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.