BGS mineralogy and petrology collection record

Sample number E40339; COLLNOCE239;
Sample Donor Evans,C.D.R.
Rock name Not entered
Stratigraphy Not entered
Comments Coarsely vesicular brecciated base lava with crystal lithic horizon. Foel Grach Suit.
Locality details 3100 ft, 56 deg E of N of Ol Levelin Cwm By Chan
50k map sheet Bangor (106)

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Map reference SH 6905 6612
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


E40339

Cross Polarized, E40339

Plane Polarized, E40339

Plane Polarized, E40339