BGS mineralogy and petrology collection record

Sample number	E4438; COLLNO219;
Sample Donor	Cantrill, T.C.
Rock name	'Original entry: Devitrified Rhyolite'
Stratigraphy	Not entered
Comments	Not entered
Locality details	E. side of Coomb Valley, 220 Yds. S. by E. of Llwyncelyn, Llangyrog, SW. of Carmarthen.
50k map sheet	Carmarthen (229) View images in GeoScenic related to 'Carmarthen' View the geology near 'Carmarthen'
Map reference	SN 333 147
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.