BGS mineralogy and petrology collection record

Sample number E12939; COLLNO27;
Sample Donor Robertson,T.
Rock name Not entered
Stratigraphy Not entered
Comments Archean core of Malvern Hills. Z 7
Locality details Colewall Old Tunnel, 3418 ft from W face
50k map sheet Worcester (199)

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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


E12939

Cross Polarized, E12939

Plane Polarized, E12939

Plane Polarized, E12939