BGS mineralogy and petrology collection record

Sample number E4185; COLLNO10; NEG638M;
Sample Donor Usher,W.A.E.
Rock name 'Original entry: Granite Porphyry With Zonal Tourmaline'
Stratigraphy Not entered
Comments Elvan.
Locality details Elvan in stream at Gover.
50k map sheet Bodmin (347)

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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


E4185

Cross Polarized, E4185

Plane Polarized, E4185

Plane Polarized, E4185