BGS mineralogy and petrology collection record

Sample number	E48502; COLLNOLA504;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microtonalite'
Stratigraphy	Not entered
Comments	Microtonalite
Locality details	470 yds 21 deg from Pont Wen
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7387 2313
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.