BGS mineralogy and petrology collection record

Sample number	E30863; COLLNOJW278;
Sample Donor	Wright,J.E.
Rock name	Chert. 'Original entry: Chert'
Stratigraphy	Not entered
Comments	? Weathered tuff from band in banded impure limestone. Chert and mudstone, culm.
Locality details	Small disused quarry, 980 Yds. W. at 22 deg. N. of Drewsteignton Church.
50k map sheet	Okehampton (324) View images in GeoScenic related to 'Okehampton' View a geological map near 'Okehampton'
Map reference	SX 727 911
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.