BGS mineralogy and petrology collection record

Sample number E13280
Sample Donor Matley, C.A
Rock name 'Original entry: Sphaerosiderite'
Stratigraphy Not entered
Comments Oolitic bed in manganese zone. Chalybitic ironstone, originally clastic.
Locality details Nant-y-Gadwen.
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


E13280

Cross Polarized, E13280

Plane Polarized, E13280

Plane Polarized, E13280