BGS mineralogy and petrology collection record

Sample number E20861; E20861/A; E20861/B; COLLNOGD164;
Sample Donor Dines,H.G.
Rock name 'Original entry: Rhodonite, Tephroite, Chlorite, Garnet And Pyrite'
Stratigraphy Not entered
Comments Lenses of manganese ore occur here in the sedimentary rock (mapped as U. Devonian), within a few Yds. of the granite margin ? met. rock, ? rhodonite.
Locality details Treburland Mine.
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


E20861

Cross Polarized, E20861

Plane Polarized, E20861

Plane Polarized, E20861


E20861/A

Cross Polarized, E20861/A

Plane Polarized, E20861/A

Plane Polarized, E20861/A


E20861/B

Cross Polarized, E20861/B

Plane Polarized, E20861/B

Plane Polarized, E20861/B