BGS mineralogy and petrology collection record

Sample number	E62034; COLLNOGW72;
Sample Donor	Woodhall, D.G.
Rock name	Dacite.
Stratigraphy	Not entered
Comments	Porphyritic basalt/dolerite, ? intrusive
Locality details	735 m 285 deg from Bryn Brith; 5.4 Km NE of Fairbourne Stn.
50k map sheet	Barmouth (149) View images in GeoScenic related to 'Barmouth' View a geological map near 'Barmouth'
Map reference	SH 6574 1520
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.