BGS mineralogy and petrology collection record

Sample number	E7841; COLLNO227;
Sample Donor	Dewey,H.
Rock name	Basalt. 'Original entry: Minverite'
Stratigraphy	Not entered
Comments	Olivine, tremolite, hornblende, augite, biotite, zoisite, epidote, chlorite and albite.
Locality details	Crag near Trethinna.
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.