BGS mineralogy and petrology collection record

Sample number E9132; COLLNO49;
Sample Donor Matley, C.A
Rock name Chert. 'Original entry: Chert'
Stratigraphy Not entered
Comments Coarse grit. Chert matrix with quartz, feldspar etc..
Locality details SW. of Ogof Prencoch and W. of Bryn-Mawr.
50k map sheet Aberdaron and Bardsey Island (133)

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Map reference
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


E9132

Cross Polarized, E9132

Plane Polarized, E9132

Plane Polarized, E9132