BGS mineralogy and petrology collection record

Sample number E54248; COLLNOFU40;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Massive feldspathic tuff. Padarn tuff.
Locality details 850 m. at 70 deg from Penygroes School.
50k map sheet Nefyn (118)

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Map reference SH 4830 5344
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


E54248

Cross Polarized, E54248

Plane Polarized, E54248

Plane Polarized, E54248