BGS mineralogy and petrology collection record

Sample number E54438; COLLNOFU10;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Quartz-feldspar tuff. Padarn Tuff
Locality details 200 m 49 deg from Chapel in Cilgwyn
50k map sheet Nefyn (118)

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Map reference SH 4961 5417
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


E54438

Cross Polarized, E54438

Plane Polarized, E54438

Plane Polarized, E54438