BGS mineralogy and petrology collection record

Sample number E62638; E62638/A; E62638/B; COLLNOMH1600;
Sample Donor Howells,M.F.
Rock name 'Original entry: Tuff/Mudstone'
Stratigraphy Not entered
Comments Blue grey tuff/mudstone.
Locality details Tyddyn Mawr.
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View the geology near 'Barmouth'

Map reference SH 7030 1544
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


E62638/A

Cross Polarized, E62638/A

Plane Polarized, E62638/A

Plane Polarized, E62638/A


E62638/B

Cross Polarized, E62638/B

Plane Polarized, E62638/B

Plane Polarized, E62638/B