BGS mineralogy and petrology collection record

Sample number S11794
Sample Donor Maconachie,A.
Rock name 'Original entry: Garnetiferous Biotite Gneiss'
Stratigraphy Not entered
Comments With lumps of magnetite (rich in alkali feldspar, albite etc.)
Locality details 900 yds slightly S by E of spot height 1692', Mullach Creag Riaraidh
50k map sheet Alness (93)

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Map reference NH 471 844
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


S11794

Cross Polarized, S11794

Plane Polarized, S11794

Plane Polarized, S11794