BGS mineralogy and petrology collection record

Sample number E54345; COLLNOBS87;
Sample Donor Webb,B.C.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Cleaved welded tuff.
Locality details 250 m. N. of scree patch, 150 m. NW. of Ciom Silyn summit cairn.
50k map sheet Nefyn (118)

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Map reference SH 5243 5070
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


E54345

Cross Polarized, E54345

Plane Polarized, E54345

Plane Polarized, E54345