BGS mineralogy and petrology collection record

Sample number E21921
Sample Donor Shannon,W.G.
Rock name 'Original entry: Sanidine Porphyry'
Stratigraphy Not entered
Comments Orthophyre. No rock. Pebbles from Permian breccias.
Locality details Watcombe.
50k map sheet Newton Abbot (339)

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Map reference SX 921 673
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


E21921

Cross Polarized, E21921

Plane Polarized, E21921

Plane Polarized, E21921