BGS mineralogy and petrology collection record

Sample number	MR25082
Sample Donor	Collins,G.H.
Rock name	'Original entry: Porphyrite'
Stratigraphy	Not entered
Comments	Hornblende porphyrites.. NGR as in register.
Locality details	Quarry name: Middle Mill quarry.: at 120 yds W 20 degrees N of Middle Mill Edge. Pembrokeshire
50k map sheet	St. Davids (209) View images in GeoScenic related to 'St. Davids' View the geology near 'St. Davids'
Map reference	SM 805 259
Year collected	1961
Bore name	Not applicable
Confidentiality	No restrictions