BGS mineralogy and petrology collection record

Sample number E10892; COLLNO293;
Sample Donor Blake,Professor
Rock name 'Original entry: Mica-Schist'
Stratigraphy Not entered
Comments Mona Complex. Pen-Zone. See Mem.Geol.of Anglesey.pp.371-2. Siliceous. Poor in mica. Alkali-feldspar. May be foliated adinole
Locality details Bryn-faes, Gaerwen
50k map sheet Caernarfon (105)

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Map reference SH 48 71
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


E10892

Cross Polarized, E10892

Plane Polarized, E10892

Plane Polarized, E10892