BGS mineralogy and petrology collection record

Sample number	E48309; COLLNOLA472;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Microtonalite'
Stratigraphy	Not entered
Comments	Microtonalite
Locality details	50 yds SW of Llyn Gelli Gai
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7331 3266
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.