BGS mineralogy and petrology collection record

Sample number E62051; COLLNOGW89;
Sample Donor Woodhall, D.G.
Rock name Tuff, Metamorphosed.
Stratigraphy Not entered
Comments Field name: Conglomeratic, ? Sst. Thin section: fine-grained quartzo-feldspathic rock with localised coarser patches of alkali- & plagioclase feldspar. Probable igneous protolith
Locality details 240 m 333 deg from Bryn Brith; 5.4 Km NE of Fairbourne Stn.
50k map sheet Barmouth (149)

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Map reference SH 6635 1557
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


Cross Polarized, E62051

Plane Polarized, E62051

Plane Polarized, E62051