BGS mineralogy and petrology collection record

Sample number	E48504; COLLNOLA506;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microdiorite'
Stratigraphy	Not entered
Comments	? Microdiorite
Locality details	480 yds 183 deg of Penrhos Isaf
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7376 2342
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.