BGS mineralogy and petrology collection record

Sample number E22017
Sample Donor Shannon,W.G.
Rock name 'Original entry: Quartz Porphyrite'
Stratigraphy Not entered
Comments PORPHYRITE
Locality details Trewartha
50k map sheet Falmouth (352)

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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


E22017

Cross Polarized, E22017

Plane Polarized, E22017

Plane Polarized, E22017