BGS mineralogy and petrology collection record

Sample number E10840; COLLNO241;
Sample Donor Blake,Professor
Rock name 'Original entry: Calcified Gneiss?'
Stratigraphy Not entered
Comments see mem. Geology of Anglesey p 327-8 ? Pyroxene sphere & Albite Mona Complex The Gneisses
Locality details Trwyn by Abertywedog
50k map sheet Holyhead (93)

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Map reference SH 49 90
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


E10840

Cross Polarized, E10840

Plane Polarized, E10840

Plane Polarized, E10840