BGS mineralogy and petrology collection record

Sample number S74288; COLLNOGX854;
Sample Donor Mendum,J.R.
Rock name Porphyry.
Stratigraphy Not entered
Comments Sill of green/pale grey mottled feldspar porphyry; ?Devonian
Locality details 310m SE of Bridge of Brown
50k map sheet Tomintoul (75)

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Map reference NJ 1263 2038
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


S74288

Cross Polarized, S74288

Plane Polarized, S74288

Plane Polarized, S74288