BGS mineralogy and petrology collection record

Sample number	MR6584
Sample Donor	Not entered
Rock name	'Original entry: Porphyrite, Altered Andesite'
Stratigraphy	Not entered
Comments	197/4, Q/159
Locality details	Bwlch Mawr, 1.5 mi S of Clynnog Fawr, Carnarvonshire
50k map sheet	Nefyn (118) View images in GeoScenic related to 'Nefyn' View the geology near 'Nefyn'
Map reference	SH 426 477
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions