BGS mineralogy and petrology collection record

Sample number E61953; COLLNOMH1554;
Sample Donor Howells,M.F.
Rock name Tuffite.
Stratigraphy Not entered
Comments Blue grey silty tuff, acid
Locality details Mynydd Pencoed
50k map sheet Barmouth (149)

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Map reference SN 6952 1115
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, E61953

Plane Polarized, E61953

Plane Polarized, E61953