BGS mineralogy and petrology collection record

Sample number E4448
Sample Donor Usher,W.A.E.
Rock name Felsite. 'Original entry: Quartz Porphyry'
Stratigraphy Not entered
Comments L. Devonian
Locality details Withnoe Large Qry
50k map sheet Plymouth (348)

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Map reference SX 404 519
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


E4448

Cross Polarized, E4448

Plane Polarized, E4448

Plane Polarized, E4448