BGS mineralogy and petrology collection record

Sample number E11974; COLLNO319;
Sample Donor Dewey,H.
Rock name 'Original entry: Mineral Sample'
Stratigraphy Not entered
Comments Quartz, fluorspar, tourmaline, ? beryl largely replaced by mica.
Locality details Hawkmoor Mine, Calstock, near Gunnislake.
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


E11974

Cross Polarized, E11974

Plane Polarized, E11974

Plane Polarized, E11974