BGS mineralogy and petrology collection record

Sample number	E14423; COLLNOLP245;
Sample Donor	Matley, C.A
Rock name	Tuff. 'Original entry: Silicified Tuff'
Stratigraphy	Not entered
Comments	Chert rock below crystal tuff
Locality details	Cadwgan Rhiw
50k map sheet	Pwllheli (134) View images in GeoScenic related to 'Pwllheli' View the geology near 'Pwllheli'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.