BGS mineralogy and petrology collection record

Sample number E38850; COLLNOMH210;
Sample Donor Howells,M.F.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Tuff ? Intrusive
Locality details S Cwm, Dreiniog
50k map sheet Snowdon (119)

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Map reference SH 7445 5430
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


E38850

Cross Polarized, E38850

Plane Polarized, E38850

Plane Polarized, E38850