BGS mineralogy and petrology collection record

Sample number	E8476; COLLNO370;
Sample Donor	Calloway, G.A.
Rock name	'Original entry: Hornblende-Gneiss. Diorite.'
Stratigraphy	Not entered
Comments	Mona Complex. See Mem.Geol.of Anglesey.pp.376-7
Locality details	Gaerwen
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 480 719
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.