BGS mineralogy and petrology collection record

Sample number	E38372; COLLNOHF240;
Sample Donor	Francis,E.H.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Tuffaceous siltstone
Locality details	430 yds SSW of Llyn Bychan
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 7503 5889
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.