BGS mineralogy and petrology collection record

Sample number	E7202; COLLNO186; NEG778M;
Sample Donor	Dewey,H.
Rock name	Basalt. 'Original entry: Minverite'
Stratigraphy	Not entered
Comments	Epidote, actinolite, with large crystals of albite. .
Locality details	Rock ledge by Polyphant Old Quarry.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View a geological map near 'Tavistock'
Map reference	SX 257 829
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.