BGS mineralogy and petrology collection record

Sample number E54246; COLLNOFU38;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Altered grey feldspathic tuff. Padarn tuff.
Locality details 780 m. at 71 deg from Penygroes School.
50k map sheet Nefyn (118)

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Map reference SH 4825 5338
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


E54246

Cross Polarized, E54246

Plane Polarized, E54246

Plane Polarized, E54246