BGS mineralogy and petrology collection record

Sample number E13387; COLLNO101;
Sample Donor Matley, C.A
Rock name Chert. 'Original entry: Chert'
Stratigraphy Not entered
Comments Chert near contact with sill. (Arenig).
Locality details N. side of Porth Mendwy. Under dolerite sill.
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


E13387

Cross Polarized, E13387

Plane Polarized, E13387

Plane Polarized, E13387