BGS mineralogy and petrology collection record

Sample number E10748; COLLNO149;
Sample Donor Blake,Professor
Rock name 'Original entry: Mica Schist'
Stratigraphy Not entered
Comments Mona Complex. Pen-Zone. See Mem.Geol.of Anglesey.cf.pp.368-9. Albite & some orthoclase. Large white micas
Locality details Ty-Mawr. S.of Llanddaniel
50k map sheet Caernarfon (105)

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Map reference SH 493 699
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


E10748

Cross Polarized, E10748

Plane Polarized, E10748

Plane Polarized, E10748