BGS mineralogy and petrology collection record

Sample number S94643; COLLNOCY54;
Sample Donor Akhurst, M.C.
Rock name Porphyry. 'Original entry: Felsite'
Stratigraphy Not entered
Comments Porphyritic felsite dyke rock
Locality details S flank of Barfill Hill
50k map sheet Thornhill (9E)

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Map reference NX 8499 7316
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


S94643

Cross Polarized, S94643

Plane Polarized, S94643

Plane Polarized, S94643