BGS mineralogy and petrology collection record

Sample number E67041; COLLNOWPR428;
Sample Donor Pratt, W.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Craig Cau Formation. Welded tuff
Locality details 420 m at 238 deg from Pont y Garth
50k map sheet Barmouth (149)

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View the geology near 'Barmouth'

Map reference SH 6322 0688
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


E67041

Cross Polarized, E67041

Plane Polarized, E67041

Plane Polarized, E67041