BGS mineralogy and petrology collection record

Sample number E10777; COLLNO178;
Sample Donor Blake,Professor
Rock name 'Original entry: Hornblende Gneiss'
Stratigraphy Not entered
Comments Mona Complex. The Gneisses. See Mem.Geol.of Anglesey.pp.376-7 Albitic diorite, heavily crushed
Locality details N.end of wood, N.of Holland Arms
50k map sheet Caernarfon (105)

View images in GeoScenic related to 'Caernarfon'

View the geology near 'Caernarfon'

Map reference SH 470 725
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


E10777

Cross Polarized, E10777

Plane Polarized, E10777

Plane Polarized, E10777