BGS mineralogy and petrology collection record

Sample number ED971
Sample Donor UNKNOWN
Rock name Not entered
Stratigraphy Not entered
Comments Hornblende gneiss
Locality details Knoll 0.5miles due N of bridge over An Garbh Allt, 0.75miles NW of Hotel Altnaharra
50k map sheet Altnaharra (108)

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Map reference NC 551 374
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


ED971

Cross Polarized, ED971

Plane Polarized, ED971

Plane Polarized, ED971