BGS mineralogy and petrology collection record

Sample number E4348
Sample Donor Usher,W.A.E.
Rock name Chert. 'Original entry: Chert'
Stratigraphy Not entered
Comments Upp. Devonian
Locality details N of Henin Point; S of Saltash
50k map sheet Plymouth (348)

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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


E4348

Cross Polarized, E4348

Plane Polarized, E4348

Plane Polarized, E4348