BGS mineralogy and petrology collection record

Sample number E51932; COLLNOLA618;
Sample Donor Allen,P.M.
Rock name Porphyry. 'Original entry: Porphyry'
Stratigraphy Not entered
Comments Porphyry.
Locality details 200 Yds. at 210 deg. from Hollybush Farm.
50k map sheet St. Davids (209)

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Map reference SM 8601 2895
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


E51932

Cross Polarized, E51932

Plane Polarized, E51932

Plane Polarized, E51932