BGS mineralogy and petrology collection record

Sample number E4947; E4947/A; ELABNO230;
Sample Donor Usher,W.A.E.
Rock name Basalt. 'Original entry: Spilite (Porphyrite)'
Stratigraphy Not entered
Comments Not entered
Locality details Devonport Workhouse Qry. E of Workhouse
50k map sheet Plymouth (348)

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Map reference SX 4220 6585
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


E4947

Cross Polarized, E4947

Plane Polarized, E4947

Plane Polarized, E4947