BGS mineralogy and petrology collection record

Sample number E52254; E52254/A; E52254/B; E52254/C; COLLNOLA670;
Sample Donor Allen,P.M.
Rock name 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments Rhyolite
Locality details Foel Ddu
50k map sheet Bala (136)

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View the geology near 'Bala'

Map reference SH 8306 2049
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


E52254/A

Cross Polarized, E52254/A

Plane Polarized, E52254/A

Plane Polarized, E52254/A


E52254/B

Cross Polarized, E52254/B

Plane Polarized, E52254/B

Plane Polarized, E52254/B


E52254/C

Cross Polarized, E52254/C

Plane Polarized, E52254/C

Plane Polarized, E52254/C