BGS mineralogy and petrology collection record

Sample number	E4108; COLLNO75;
Sample Donor	Pocock,R.W.
Rock name	'Original entry: Chert, Limonitic'
Stratigraphy	Not entered
Comments	Chert
Locality details	Top of Yoke Cliffe Wood Qy. Wirksworth
50k map sheet	Derby (125) View images in GeoScenic related to 'Derby' View the geology near 'Derby'
Map reference	SK 279 539
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.