BGS mineralogy and petrology collection record

Sample number E39482; COLLNOBL228;
Sample Donor Leveridge,B.E.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments 35 ft above base of Section. Snowdon Rhyolite Tuffs; Tuff units forming prominent crags on the N and S sides of Lledr Valley at Dolwyddelan;
Locality details N of Dolwyddelan Railway Station
50k map sheet Snowdon (119)

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Map reference SH 7452 5230
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


E39482

Cross Polarized, E39482

Plane Polarized, E39482

Plane Polarized, E39482