BGS mineralogy and petrology collection record

Sample number E11172
Sample Donor Smith, B.
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments Not entered
Locality details About 340 yds W of Garn Feifod
50k map sheet Bala (136)

View images in GeoScenic related to 'Bala'

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Map reference SJ 089 291
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


Cross Polarized, E11172

Plane Polarized, E11172

Plane Polarized, E11172