BGS mineralogy and petrology collection record

Sample number	E63559; COLLNOKB559;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy	Not entered
Comments	Fe rich fractures, silicified, near top of unit(GROUP= Snowdon Volcanic Group)(FORM= Lower Rhyolitic Tuff Fm.)(MEMB= .)(IE=E)(TEXTURE=Welded, foliated
Locality details	Yr Aran, rhos boeth
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 5905 5231
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.