BGS mineralogy and petrology collection record

Sample number E13394
Sample Donor Matley, C.A
Rock name Tuff. 'Original entry: Tuff'
Stratigraphy Not entered
Comments Mona complex, tuff.
Locality details Northern tuff crag on Mynydd Onelog, NNW. of Graig.
50k map sheet Aberdaron and Bardsey Island (133)

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Map reference
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


Cross Polarized, E13394

Plane Polarized, E13394

Plane Polarized, E13394