BGS mineralogy and petrology collection record

Sample number	E63250; COLLNOKB250;
Sample Donor	Not entered
Rock name	Rhyolite. 'Original entry: Rhyolite'
Stratigraphy	Not entered
Comments	Dome overling acid tuff, part intrusive(GROUP= Snowdon Volcanic Group)(FORM= Upper Rhyolitic Tuff Fm.)(MEMB= .)(IE=E)(TEXTURE=Much sulphide
Locality details	Gallt y Wenallt
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 6390 5343
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.