BGS mineralogy and petrology collection record

Sample number	E7163; COLLNO28;
Sample Donor	Sherlock,R.
Rock name	Dolerite (Synonymous With Microgabbro). 'Original entry: Diabase'
Stratigraphy	Not entered
Comments	Granular augite. In part of the slide hornblende occurs.
Locality details	Monkstone, 400 Yds. NNW. of Brent Tor.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference	SX 469 809
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.