BGS mineralogy and petrology collection record

Sample number E67089; COLLNOWPR267;
Sample Donor Pratt, W.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Arthog Formation. Lithic tuff
Locality details 140 m at 265 deg from Tal y Gareg Beacon
50k map sheet Barmouth (149)

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View the geology near 'Barmouth'

Map reference SH 5727 0357
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


E67089

Cross Polarized, E67089

Plane Polarized, E67089

Plane Polarized, E67089