BGS mineralogy and petrology collection record

Sample number	E63900; COLLNOKB900;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy	Not entered
Comments	Hanging-wall of main lode 2m N of main entrance(GROUP= Snowdon Volcanic Group)(FORM= Lower Rhyolitic Tuff Fm.)(MEMB= .)(IE=E)(TEXTURE=
Locality details	Cwm Bychan
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 6033 4756
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.