BGS mineralogy and petrology collection record

Sample number S31185; COLLNOAM34;
Sample Donor Macgregor,A.G.
Rock name Not entered
Stratigraphy Not entered
Comments St Leonard's Sill. Porphyritic basalt which grades upwards into non-porphyritic basalt and is cut by chilled veins of porhyritic basalt (Locality A of section).
Locality details Backyard, No. 39 St Leonard's Hill
50k map sheet Edinburgh (32)

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Map reference NT 2648 7299
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


S31185

Cross Polarized, S31185

Plane Polarized, S31185

Plane Polarized, S31185