BGS mineralogy and petrology collection record

Sample number S30513
Sample Donor Richey, James E.
Rock name Not entered
Stratigraphy Not entered
Comments Diabase porphyrite
Locality details Grain Burn, 660 yards S 30 deg E of triangulation point of Guffock Hill
50k map sheet Sanquhar (15)

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Map reference NS 763 142
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


S30513

Cross Polarized, S30513

Plane Polarized, S30513

Plane Polarized, S30513