BGS mineralogy and petrology collection record

Sample number E42708
Sample Donor Hawkes,J.R.
Rock name 'Original entry: Siltstone Greywacke'
Stratigraphy Not entered
Comments Sandstone, Bude Formation. (G.Listere Horizon).
Locality details Quarry, 2.5 Km. at 135 deg. from Roborough Church.
50k map sheet Cholmleigh (309)

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Map reference SS 5945 1535
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E42708

Cross Polarized, E42708

Plane Polarized, E42708

Plane Polarized, E42708