BGS mineralogy and petrology collection record

Sample number S6992
Sample Donor Barrow, G.
Rock name 'Original entry: Sillimanite-Garnet-Biotite Gneiss, Altered'
Stratigraphy Not entered
Comments Similar to S. 6988-6989, somewhat altered
Locality details Tomachallich
50k map sheet Banchory (66)

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Map reference NO 4760 9975
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


S6992

Cross Polarized, S6992

Plane Polarized, S6992

Plane Polarized, S6992