BGS mineralogy and petrology collection record

Sample number E57198
Sample Donor Dangerfield,J.; Hawkes,J.R.; Wheatley, C.W.;
Rock name 'Original entry: Porphyritic Volcanic Rock'
Stratigraphy Not entered
Comments Quartz porphyry. (Flow banded margin).
Locality details Newel Tor, 1.5 Km. at 002 deg. from Siblyback Farm.
50k map sheet Tavistock (337)

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Map reference SX 2359 7409
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


E57198

Cross Polarized, E57198

Plane Polarized, E57198

Plane Polarized, E57198