BGS mineralogy and petrology collection record

Sample number	E62047; COLLNOGW85;
Sample Donor	Woodhall, D.G.
Rock name	Semipelite.
Stratigraphy	Not entered
Comments	Field name: Tuff. Thin Section--strongly chloritised & sericitised quartzo-feldspathic rock, no obvious igneous textures, strong metamorphic fabric
Locality details	675 m 251 deg from Bryn Brith; 5.4 Km NE of Fairbourne Stn.
50k map sheet	Barmouth (149) View images in GeoScenic related to 'Barmouth' View the geology near 'Barmouth'
Map reference	SH 6582 1513
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.