BGS mineralogy and petrology collection record

Sample number	E7203; COLLNO187; NEG1310M; NEG760M; PHOTOM776-7;
Sample Donor	Dewey,H.
Rock name	Picrite. 'Original entry: Hornblende Picrite'
Stratigraphy	Not entered
Comments	Olivine, (serpentinised) tremolite, hornblende, augite, biotite and magnetite.
Locality details	3 fields W. of Trewen.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference	SX 250 836
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.