BGS mineralogy and petrology collection record

Sample number S11563
Sample Donor Grabham, G.W.
Rock name 'Original entry: Hornblende-Biotite Porphyrite'
Stratigraphy Not entered
Comments Dyke in granite
Locality details Rock scar 300 yds SW of a point 700 yds up Allt Coire a' Chaolain
50k map sheet Ben Nevis (53)

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Map reference NN 196 490
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


S11563

Cross Polarized, S11563

Plane Polarized, S11563

Plane Polarized, S11563