BGS mineralogy and petrology collection record

Sample number E61965; COLLNOMH1566;
Sample Donor Howells,M.F.
Rock name Trachytic-Rock.
Stratigraphy Not entered
Comments Fine grained acid tuff/rhyolite
Locality details Top of Ceffyl
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

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Map reference SN 6655 1114
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, E61965

Plane Polarized, E61965

Plane Polarized, E61965