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 a geological map 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.