BGS mineralogy and petrology collection record

Sample number	MR21996
Sample Donor	Road Research Laboratory
Rock name	'Original entry: Porphyritic Trachyte'
Stratigraphy	Not entered
Comments	Porphyritic Trachyte Aggregate. NGR estimated.
Locality details	Downhead Qry. Shepton (Mallet)
50k map sheet	Frome (281) View images in GeoScenic related to 'Frome' View the geology near 'Frome'
Map reference	ST 686 461
Year collected	1959
Bore name	Not applicable
Confidentiality	No restrictions