BGS mineralogy and petrology collection record

Sample number E3193
Sample Donor Usher,W.A.E.
Rock name Wacke. 'Original entry: Greywacke'
Stratigraphy Not entered
Comments Not entered
Locality details S. of Abbey Bridge, Tavistock.
50k map sheet Tavistock (337)

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Map reference
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


E3193

Cross Polarized, E3193

Plane Polarized, E3193

Plane Polarized, E3193