BGS mineralogy and petrology collection record

Sample number	E29442; COLLNOYG3437;
Sample Donor	Smith,D.B.
Rock name	'Original entry: Dolomite-Siltstone With Quartz Anhydrite In Cavities'
Stratigraphy	Not entered
Comments	Upper part of Middle Magnesian Limestone reef. Detritus filling reef cavity & containing Authigenic Quartz cf YG3438 MR24995
Locality details	N. side of Hesledon Dene 10' above stream level. 1200' ESE. Of the station Hesledon
50k map sheet	Durham (27) View images in GeoScenic related to 'Durham' View the geology near 'Durham'
Map reference	NZ 444 378
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.