BGS mineralogy and petrology collection record

Sample number	E48307; COLLNOLA470;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microtonalite'
Stratigraphy	Not entered
Comments	Microtonalite
Locality details	840 yds 29 deg from Hafotty R Plas
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7378 3301
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.