BGS mineralogy and petrology collection record

Sample number E38113; MR31812; COLLNO10;
Sample Donor Dangerfield,J.; Hart,F.;
Rock name 'Original entry: Lithic Greywacke'
Stratigraphy Not entered
Comments Grampound Grit; Lower Devonian. Used as part of 1970's Roadstone Project
Locality details Tredinnick Quarry, 350 Yds. ESE. of Benallack, which is 1 mile SE. of Grampound Road Station.
50k map sheet Bodmin (347)

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Map reference SW 932 494
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


E38113

Cross Polarized, E38113

Plane Polarized, E38113

Plane Polarized, E38113