BGS mineralogy and petrology collection record

Sample number E4400; COLLNO27;
Sample Donor Thomas, Dr.
Rock name Andesite. 'Original entry: Pyroxene Andesite'
Stratigraphy Not entered
Comments Not entered
Locality details Quarry in Trefgarn Wood, half a mile E. of Trefgarn, by roadside.
50k map sheet Fishguard (210)

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Map reference SM 961 237
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


E4400

Cross Polarized, E4400

Plane Polarized, E4400

Plane Polarized, E4400