BGS mineralogy and petrology collection record

Sample number	E18035; COLLNOM166;
Sample Donor	Matley, C.A
Rock name	'Original entry: ? Edpidotized Quartz Diorite'
Stratigraphy	Not entered
Comments	Feldspathic grit
Locality details	Graigddo Isaf, Upper Massive
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.