BGS mineralogy and petrology collection record

Sample number E8992; COLLNO334;
Sample Donor Thomas, Dr.
Rock name Trachytic-Rock. 'Original entry: Quartz Keratophyre'
Stratigraphy Not entered
Comments Not entered
Locality details 1. Brandy Brook, E. bank.
50k map sheet St. Davids (209)

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Map reference SM 906 267
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, E8992

Plane Polarized, E8992

Plane Polarized, E8992