BGS mineralogy and petrology collection record

Sample number S4520
Sample Donor UNKNOWN
Rock name 'Original entry: Sanidine Trachyte / Porphyritc Trachyte'
Stratigraphy Not entered
Comments Sanidine trachyte /porphyritic trachyte
Locality details Pepper Craig Quarry, Garleton Hills
50k map sheet Haddington (33)

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Map reference NT 508 745
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


S4520

Cross Polarized, S4520

Plane Polarized, S4520

Plane Polarized, S4520