BGS mineralogy and petrology collection record

Sample number E19776; MR17635; COLLNOAWW28;
Sample Donor Woodland,A.W.
Rock name Hydroxides And Oxides Of Iron. 'Original entry: Chamosite And Pisolite In Phosphatic, Chamositic, Carbonaceous Shale'
Stratigraphy Not entered
Comments Black pisolitic ironstone. (Low grade pisolites, not particlarly abundant).
Locality details Old open trial workings for Ironstone, near cliffs, half a mile N.by W. of Trevor village; N. of Yr Eifl.
50k map sheet Nefyn (118)

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Map reference SH 371 474
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


E19776

Cross Polarized, E19776

Plane Polarized, E19776

Plane Polarized, E19776