BGS mineralogy and petrology collection record

Sample number	E10827; COLLNO228; NEGM1137;
Sample Donor	Blake,Professor
Rock name	'Original entry: Sodium-Granophyre'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey pp 494-5:527-8 p1 xxviii fig. 2 Complex pegmatic & Perthitic Porphyrite felsite Palaeozoic Intrusions
Locality details	Hafod-onen Amlwch
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 422 914
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.