BGS mineralogy and petrology collection record

Sample number E54278; COLLNOFU72;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Sheared quartz crystal tuff. Padarn Tuff.
Locality details 23 m. at 220 deg. from Mynydd Cilgwyn.
50k map sheet Nefyn (118)

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Map reference SH 4976 5428
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


E54278

Cross Polarized, E54278

Plane Polarized, E54278

Plane Polarized, E54278