BGS mineralogy and petrology collection record

Sample number E8549; COLLNO573;
Sample Donor Calloway, G.A.
Rock name 'Original entry: Hornblende Gneiss'
Stratigraphy Not entered
Comments See Mem.Geol.of Anglesey c.f.pp.322-3.. Mona Complex. The Gneisses.
Locality details West of Craig-yr-Allor
50k map sheet Holyhead (93)

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Map reference SH 371 773
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


E8549

Cross Polarized, E8549

Plane Polarized, E8549

Plane Polarized, E8549