BGS mineralogy and petrology collection record

Sample number E54436; COLLNOFU8;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Sheared vitric tuff. Padarn Tuff
Locality details 655 m 267 deg from Summit of Cilgwyn
50k map sheet Nefyn (118)

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Map reference SH 4910 5425
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


E54436

Cross Polarized, E54436

Plane Polarized, E54436

Plane Polarized, E54436