BGS mineralogy and petrology collection record

Sample number	MR25865
Sample Donor	Collins,G.H.
Rock name	'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Diabase. NGR as in register.
Locality details	Polyphant No 1 Quarry: at 250 yds NW of Two Bridges 3/4 mile NW of Lewannick.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View a geological map near 'Tavistock'
Map reference	SX 269 819
Year collected	1962
Bore name	Not applicable
Confidentiality	No restrictions