BGS mineralogy and petrology collection record

Sample number E64350; COLLNOKB1350;
Sample Donor Not entered
Rock name Rhyolite. 'Original entry: Rhyolite (Gamallt)'
Stratigraphy Not entered
Comments Weathered and silicified, carbonate rich. XR PM 2(GROUP= )(FORM= )(MEMB= .)(IE=)(TEXTURE=
Locality details Penmachno slate quarry
50k map sheet Snowdon (119)

View images in GeoScenic related to 'Snowdon'

View a geological map near 'Snowdon'

Map reference SH 7520 4657
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


E64350

Cross Polarized, E64350

Plane Polarized, E64350

Plane Polarized, E64350