BGS mineralogy and petrology collection record

Sample number E53167; COLLNOLA807;
Sample Donor Allen,P.M.
Rock name Not entered
Stratigraphy Not entered
Comments Brecciated porphyry
Locality details Treycaw BH, 380 yds 105 deg from Treycaw Fm. entrance
50k map sheet St. Davids (209)

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Map reference SM 8446 2809
Year collected Not entered 
Bore name Trecaw Farm
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E53167

Cross Polarized, E53167

Plane Polarized, E53167

Plane Polarized, E53167