BGS mineralogy and petrology collection record

Sample number	E48509; COLLNOLA511;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microdiorite'
Stratigraphy	Not entered
Comments	? Microdiorite
Locality details	220 yds 210 deg of Plas Tyddn Gwcadys
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7339 2633
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.