BGS mineralogy and petrology collection record

Sample number	E10696; COLLNO97;
Sample Donor	Blake,Professor
Rock name	'Original entry: Quartzite Greenstone Knob'
Stratigraphy	Not entered
Comments	Mona Complex. Gwna Beds. See Mem.Geol.of Anglesey.p.350. Similar, but containing frag's.of ancient foliated rocks
Locality details	Llangefni
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 459 757
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.