BGS mineralogy and petrology collection record

Sample number S11566
Sample Donor Grabham, G.W.
Rock name 'Original entry: Biotite-Hornblende Porphyrite'
Stratigraphy Not entered
Comments Dyke
Locality details 550 yds S 20 deg W of cairn, Meall Garbh
50k map sheet Ben Nevis (53)

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Map reference NN 1925 4775
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


S11566

Cross Polarized, S11566

Plane Polarized, S11566

Plane Polarized, S11566