BGS mineralogy and petrology collection record

Sample number E7236; COLLNO263;
Sample Donor Thomas, Dr.
Rock name Trachytic-Rock. 'Original entry: Quartz Keratophyre'
Stratigraphy Not entered
Comments Not entered
Locality details 5. 200 Yds. N. of Gig-nog-Ford.
50k map sheet St. Davids (209)

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Map reference
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


E7236

Cross Polarized, E7236

Plane Polarized, E7236

Plane Polarized, E7236