BGS mineralogy and petrology collection record

Sample number	E14410; COLLNOLP231;
Sample Donor	Matley, C.A
Rock name	'Original entry: Porphyritic Volcanic Rock'
Stratigraphy	Not entered
Comments	Quartz porphyry
Locality details	Cliff Nr. Glanllgnan Llaniestyn
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.