BGS mineralogy and petrology collection record

Sample number E25692; COLLNOEE278;
Sample Donor Elliot,R.W.
Rock name Not entered
Stratigraphy Not entered
Comments Dolerite sill, between Carn Llidig and Carn Trelwyd sills.
Locality details On cliff top at Penrhyn Halen, 1020 Yds. at 22.5 deg. S. of W. of Careg-yr-Afr. (South point of isle).
50k map sheet St. Davids (209)

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Map reference SM 749 288
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


E25692

Cross Polarized, E25692

Plane Polarized, E25692

Plane Polarized, E25692