BGS mineralogy and petrology collection record

Sample number	E9887; COLLNO99;
Sample Donor	Greenly,E.
Rock name	'Original entry: Albite-Muscovite-Biotite-Gneiss. Flaky Micaceous Gneiss'
Stratigraphy	Not entered
Comments	ANAL.MEM.1931 p142
Locality details	Where the Holyhead road crosses rlwy ?unning Goarwen-Amlwch.217yds. NNE.of Old Windmill, Holland Arms. Edge of wood at wall corner 200ft.NW.of Craig Fash
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 474 725
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.