BGS mineralogy and petrology collection record

Sample number E9041
Sample Donor Dewey,H.
Rock name 'Original entry: Decomposed Spilite'
Stratigraphy Not entered
Comments Decomposed porphyritic hornblende crystals.
Locality details Illand Quarry.
50k map sheet Tavistock (337)

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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


E9041

Cross Polarized, E9041

Plane Polarized, E9041

Plane Polarized, E9041