BGS mineralogy and petrology collection record

Sample number E21040
Sample Donor Dunham,K.C.
Rock name 'Original entry: Ankerite,Chalybite,Limonite Secoundary Silica'
Stratigraphy Not entered
Comments Metasomatised Shaly Limestone
Locality details Slit Mine Dump
50k map sheet Alston (25)

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Map reference NY 904 392
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


E21040

Cross Polarized, E21040

Plane Polarized, E21040

Plane Polarized, E21040