BGS mineralogy and petrology collection record

Sample number E24173; COLLNO25B;
Sample Donor Eyles,V.A.
Rock name Tuff. 'Original entry: Crystal Vitric Tuff'
Stratigraphy Not entered
Comments ?Rhyolite
Locality details No.7 Borehole, Llanwyrst. 330 yds. S13W of Old Shafts, New Pandora Lead Mine
50k map sheet Bangor (106)

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Map reference SH 767 601
Year collected Not entered 
Bore name Llanwyrst No.7
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E24173

Cross Polarized, E24173

Plane Polarized, E24173

Plane Polarized, E24173