BGS mineralogy and petrology collection record

Sample number	E38116; MR31815; COLLNOGRITSTONE;
Sample Donor	Not entered
Rock name	'Original entry: Siltstone:Greywacke'
Stratigraphy	Not entered
Comments	Welcombe Formation; Upper Carboniferous. Used as part of 1970's Roadstone Project
Locality details	St. Giles Quarry, 700 Yds. ESE. of South Headland, which is 1.75 miles SE. of Gt. Torrington.
50k map sheet	Cholmleigh (309) View images in GeoScenic related to 'Cholmleigh' View the geology near 'Cholmleigh'
Map reference	SS 5220 1725
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.