BGS mineralogy and petrology collection record

Sample number E67042; COLLNOWPR429;
Sample Donor Pratt, W.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Craig Cau Formation. Welded tuff
Locality details 210 m at 260 deg from Pont y Garth
50k map sheet Barmouth (149)

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View the geology near 'Barmouth'

Map reference SH 6337 0704
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


E67042

Cross Polarized, E67042

Plane Polarized, E67042

Plane Polarized, E67042