BGS mineralogy and petrology collection record

Sample number	E10675; COLLNO76;
Sample Donor	Blake,Professor
Rock name	'Original entry: Mica-Schist. Grey Gneiss.'
Stratigraphy	Not entered
Comments	Mona Complex. Pen-Zone. See Mem.Geol.of Anglesey.pp.111:340. The same components, with porphyroblastic albite.
Locality details	Porth Cwyfan E.side
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 338 681
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.