BGS mineralogy and petrology collection record

Sample number E49944; COLLNOCQ4;
Sample Donor Waters,R.A.
Rock name 'Original entry: Laminated, Bituminous, Dolomitised, Crinoidal Limestone'
Stratigraphy Not entered
Comments Upper member of Black Rock limestone. Fine grained calcarenite/siltite with crinoidal material and thin beds of crinoidal calcarenite.
Locality details Wenvoe Quarry, 500 m. at 125 deg. from Balas Farm.
50k map sheet Cardiff (263)

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Map reference ST 1337 7417
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


E49944

Cross Polarized, E49944

Plane Polarized, E49944

Plane Polarized, E49944