BGS mineralogy and petrology collection record

Sample number E67342
Sample Donor Rushton,A.A.
Rock name Tuff.
Stratigraphy Not entered
Comments Dacitic crystal tuff
Locality details By fence, 870 Km at 313 deg from Gilfach Fm.
50k map sheet Builth (196)

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Map reference SN 8754 4903
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, E67342

Plane Polarized, E67342

Plane Polarized, E67342