BGS mineralogy and petrology collection record

Sample number E54339; COLLNOBS79;
Sample Donor Webb,B.C.
Rock name 'Original entry: Slate'
Stratigraphy Not entered
Comments Slate with sandstone injections near edge of sheared band.
Locality details Prominent thin sandstone band in centre of SW. face Gloddfa Glytisu Cilgwyn Quarries.
50k map sheet Nefyn (118)

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Map reference SH 5015 5410
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


E54339

Cross Polarized, E54339

Plane Polarized, E54339

Plane Polarized, E54339