BGS mineralogy and petrology collection record

Sample number	E62060; COLLNOGW98;
Sample Donor	Woodhall, D.G.
Rock name	Semipelite.
Stratigraphy	Not entered
Comments	Field name: Laminated tuff. Thin section: fine-grained quartzo-feldspathic crystalline rock, not possible to tell protolith, phyllosilicates ~40%
Locality details	600 m 031 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 6675 1587
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.