BGS mineralogy and petrology collection record

Sample number	E14416; COLLNOLP237;
Sample Donor	Matley, C.A
Rock name	'Original entry: Chert'
Stratigraphy	Not entered
Comments	Banded cherts resting on Lower Pillow Lava
Locality details	West side Mynydd Rhiw, above 900 ft OD
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.