BGS mineralogy and petrology collection record

Sample number S21912; S21912/A;
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Biotite Lamprophyre'
Stratigraphy Not entered
Comments Inclusions of Lewisian Gneiss in hand specimen
Locality details Coire Sheilach Burn 360 yds up from junction with Garbh Allt
50k map sheet Lairg (102)

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Map reference NC 29721 03405
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


S21912

Cross Polarized, S21912

Plane Polarized, S21912

Plane Polarized, S21912


S21912/A

Cross Polarized, S21912/A

Plane Polarized, S21912/A

Plane Polarized, S21912/A