BGS mineralogy and petrology collection record

Sample number	E20864; COLLNOGD167;
Sample Donor	Dines,H.G.
Rock name	'Original entry: Manganese Oxides Replacing Chert'
Stratigraphy	Not entered
Comments	Manganese deposit in culm measures. Chert. Greenstone intrusion nearby.
Locality details	Whitstone Mine.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.