BGS mineralogy and petrology collection record

Sample number E10773; COLLNO174;
Sample Donor Blake,Professor
Rock name 'Original entry: Hornblende Gneiss'
Stratigraphy Not entered
Comments Mona Complex.? Pen-Zone. See Mem.Geol.of Anglesey.p.372. Epidote & zoisite
Locality details Behind Gaerwen Windmill
50k map sheet Caernarfon (105)

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Map reference SH 486 720
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


E10773

Cross Polarized, E10773

Plane Polarized, E10773

Plane Polarized, E10773