BGS mineralogy and petrology collection record

Sample number	E64461; COLLNOTL92;
Sample Donor	Not entered
Rock name	Tuff. 'Original entry: Acid Ash Flow Tuff'
Stratigraphy	Not entered
Comments	10m above base of tuff unit(GROUP= Llewelyn Volcanic Group)(FORM= Capel Curig Volcanic Fm.)(MEMB= 4th. Member.)(IE=E)(TEXTURE=
Locality details	N. ridge of Tryfan
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 6642 6027
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.