BGS mineralogy and petrology collection record

Sample number E39915; COLLNOCE179;
Sample Donor Evans,C.D.R.
Rock name Not entered
Stratigraphy Not entered
Comments Section of Lower Crafnant Gp. Tuffisite, 98ft above base of section
Locality details 680 ft NE of Swallow Falls
50k map sheet Bangor (106)

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Map reference SH 7659 5768
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


E39915

Cross Polarized, E39915

Plane Polarized, E39915

Plane Polarized, E39915