BGS mineralogy and petrology collection record

Sample number S12492
Sample Donor Grabham, G.W.
Rock name 'Original entry: Quartz Felsite'
Stratigraphy Not entered
Comments Dyke in metamorphic series; probably hard to be certain that it is not a lava
Locality details 1 mile 229 yds up Coupall River from mouth, Royal Forest
50k map sheet Ben Nevis (53)

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Map reference NN 2308 5546
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


S12492

Cross Polarized, S12492

Plane Polarized, S12492

Plane Polarized, S12492