BGS mineralogy and petrology collection record

Sample number	E7843; COLLNO229;
Sample Donor	Dewey,H.
Rock name	Basalt. 'Original entry: Spilite'
Stratigraphy	Not entered
Comments	Microscopic porphyritic albite.
Locality details	Bluff on Lewannick Down near Beacon.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View a geological map near 'Tavistock'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.