BGS mineralogy and petrology collection record

Sample number S12496
Sample Donor Grabham, G.W.
Rock name 'Original entry: Mica-Hornblende Porphyrite (Albitised)'
Stratigraphy Not entered
Comments Dyke; Memoir, p. 175
Locality details 1280 yds up Coupall River from mouth, Royal Forest
50k map sheet Ben Nevis (53)

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Map reference NN 2379 5521
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


S12496

Cross Polarized, S12496

Plane Polarized, S12496

Plane Polarized, S12496