BGS mineralogy and petrology collection record

Sample number E52285; E52285/A; E52285/B; COLLNOIPS8;
Sample Donor Stevenson,I.P.
Rock name Not entered
Stratigraphy Not entered
Comments ?Cambrian, pale brown, finely banded tuff 0.7 m thick.
Locality details Quarry, 595 m E 5 deg S of Tyddyn Heilyn
50k map sheet Bangor (106)

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View a geological map near 'Bangor'

Map reference SH 5764 6844
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


E52285/A

Cross Polarized, E52285/A

Plane Polarized, E52285/A

Plane Polarized, E52285/A


E52285/B

Cross Polarized, E52285/B

Plane Polarized, E52285/B

Plane Polarized, E52285/B