BGS mineralogy and petrology collection record

Sample number E51933; COLLNOLA619;
Sample Donor Allen,P.M.
Rock name Porphyry. 'Original entry: Porphyry'
Stratigraphy Not entered
Comments Porphyry.
Locality details 460 Yds. at 350 deg. from Pwll ceffyl.
50k map sheet St. Davids (209)

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Map reference SM 8541 2887
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


E51933

Cross Polarized, E51933

Plane Polarized, E51933

Plane Polarized, E51933