BGS mineralogy and petrology collection record

Sample number S11538
Sample Donor Grabham, G.W.
Rock name 'Original entry: Hornblende Porphyrite (Highly Feldspathic)'
Stratigraphy Not entered
Comments Dyke
Locality details 1280 yds 23 deg W of S from mouth of coire Fionna Ghlinne
50k map sheet Ben Nevis (53)

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Map reference NN 2217 5132
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


S11538

Cross Polarized, S11538

Plane Polarized, S11538

Plane Polarized, S11538