BGS mineralogy and petrology collection record

Sample number S20747
Sample Donor Anderson, E.M.
Rock name 'Original entry: Siliceous Sediment'
Stratigraphy Not entered
Comments Tertiary; chert bed in Shiaba coal
Locality details 800 yds ENE from Shiaba
50k map sheet Iona (43)

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Map reference NM 4453 1938
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


S20747

Cross Polarized, S20747

Plane Polarized, S20747

Plane Polarized, S20747