BGS mineralogy and petrology collection record

Sample number E10729; COLLNO130;
Sample Donor Blake,Professor
Rock name 'Original entry: Hornblende-Gneiss'
Stratigraphy Not entered
Comments see mem. Geology of Anglesey pp 322-3 Hornblende, Albite sphere pyroxene The Gneisses
Locality details Craig-yr-Allor
50k map sheet Holyhead (93)

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Map reference SH 372 773
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


E10729

Cross Polarized, E10729

Plane Polarized, E10729

Plane Polarized, E10729