BGS mineralogy and petrology collection record

Sample number E6070; COLLNO18;
Sample Donor Greenly,E.
Rock name 'Original entry: Qtzite Slightly Micaceous'
Stratigraphy Not entered
Comments See Anglesey Memoir p.268. Mona Complex. Holyhead Qtzite. Normal foliated Qtzite. Rather more micaceous. Good clastic structure.
Locality details Holyhead Mountain (Typical)
50k map sheet South Stack (92)

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Map reference SH 219 828
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


E6070

Cross Polarized, E6070

Plane Polarized, E6070

Plane Polarized, E6070