BGS mineralogy and petrology collection record

Sample number	E12358; COLLNOMJ14443; ELABNO743;
Sample Donor	Hallimond,Doctor
Rock name	'Original entry: ? Ashy Mudstone'
Stratigraphy	Not entered
Comments	Top of bed
Locality details	Penrhyn Mine, Llandegai, Nr. Bangor
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View the geology near 'Bangor'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.