BGS mineralogy and petrology collection record

Sample number E4499
Sample Donor Usher,W.A.E.
Rock name Tuff. 'Original entry: Sheared Tuff'
Stratigraphy Not entered
Comments Midd or Upp. Devonian
Locality details Roseland Qry. Between Liskheard and Menhheniot
50k map sheet Plymouth (348)

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Map reference SX 276 631
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


Cross Polarized, E4499

Plane Polarized, E4499

Plane Polarized, E4499