BGS mineralogy and petrology collection record

Sample number	E10118; COLLNO330;
Sample Donor	Greenly,E.
Rock name	'Original entry: Ashy Grit'
Stratigraphy	Not entered
Comments	Not entered
Locality details	Llanddwyn Is., Ffynnon-y-sais, N.side large dyke
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 388 632
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.