BGS mineralogy and petrology collection record

Sample number E50166; COLLNONGB297;
Sample Donor Berridge,N.G.
Rock name Not entered
Stratigraphy Not entered
Comments Diorite or porphy.andesite tuff
Locality details 1685 m 305 deg from Llyn Anafon Spillway
50k map sheet Bangor (106)

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Map reference SH 6847 7086
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


E50166

Cross Polarized, E50166

Plane Polarized, E50166

Plane Polarized, E50166