BGS mineralogy and petrology collection record

Sample number E622
Sample Donor Museum Specimens
Rock name 'Original entry: Silicified Felsite. Prob.Parys.Intu. Felsite'
Stratigraphy Not entered
Comments Cut from Mus.Spec. Prof. Ramsey collection ?or Murchison. Palaeozoic metasomation. See Mem.Geol.of Anglesey, pp.534-5:562. Spherulitic felsite, largely but not wholly silicified
Locality details Careg-wenllan, E.end of Mona copper mine
50k map sheet Holyhead (93)

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Map reference SH 460 909
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


E622

Cross Polarized, E622

Plane Polarized, E622

Plane Polarized, E622