BGS mineralogy and petrology collection record

Sample number E6948
Sample Donor Usher,W.A.E.
Rock name Rhyolite. 'Original entry: Elvan'
Stratigraphy Not entered
Comments Matrix greisened, feldspar kaolinised.
Locality details S. of St. Stephens Combe.
50k map sheet Bodmin (347)

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Map reference SW 948 511
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, E6948

Plane Polarized, E6948

Plane Polarized, E6948