BGS mineralogy and petrology collection record

Sample number S20758
Sample Donor Anderson, E.M.
Rock name 'Original entry: Tholeiite'
Stratigraphy Not entered
Comments Sill, possibly originally glassy; affinities with quartz-dolerites
Locality details 1 mile NE of Shiaba
50k map sheet Iona (43)

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Map reference NM 4478 1969
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


S20758

Cross Polarized, S20758

Plane Polarized, S20758

Plane Polarized, S20758