BGS mineralogy and petrology collection record

Sample number E8920; COLLNO430;
Sample Donor Blake,Professor
Rock name 'Original entry: Silicified (Andesite) Porphyritic Rock'
Stratigraphy Not entered
Comments Silicified andesite.
Locality details Rock Castle.
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


E8920

Cross Polarized, E8920

Plane Polarized, E8920

Plane Polarized, E8920