BGS mineralogy and petrology collection record

Sample number	E41773; COLLNOLB38;
Sample Donor	Jackson,A.A
Rock name	'Original entry: Siltstone'
Stratigraphy	Not entered
Comments	Dark grey, ? siltstone with patchy mineralisation
Locality details	Ffridd Harri Howel
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7631 3193
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.