BGS mineralogy and petrology collection record

Sample number E10662; COLLNO63;
Sample Donor Blake,J.F.
Rock name Not entered
Stratigraphy Not entered
Comments See Mem. Geol.of Anglesey pp.259:44. Mona Complex. S.Stack series Lleyn division. Quartz, albite, mica, etc. Rich in accessories. Blastopsammitic epiclastic micas
Locality details Porth-y-Crug [Grug]
50k map sheet South Stack (92)

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Map reference SH 218 811
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


Cross Polarized, E10662

Plane Polarized, E10662

Plane Polarized, E10662