BGS mineralogy and petrology collection record

Sample number	E49048; COLLNOLA535;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microdiorite'
Stratigraphy	Not entered
Comments	Amygdaloidal Microdiorite
Locality details	Glasdir Copper Mine; Bridge in Mid Pit
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7410 2232
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.