BGS mineralogy and petrology collection record

Sample number E4870; NEG330M;
Sample Donor Butler,A.J.
Rock name Granite. 'Original entry: Schorl Rock'
Stratigraphy Not entered
Comments Derived from an Elvan, silicified and tourmalinised. Rock specimen in sliced rock collection.
Locality details Wheal Herland, Gwinean.
50k map sheet Penzance (351)

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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


E4870

Cross Polarized, E4870

Plane Polarized, E4870

Plane Polarized, E4870