BGS mineralogy and petrology collection record

Sample number S30214
Sample Donor Phemister,J.
Rock name 'Original entry: Quartz-Porphyrite Or Keratophyre'
Stratigraphy Not entered
Comments Quartz-porphyrite or keratophyre. Dyke (cut across foliation)
Locality details Grud Burn, 2100 ft upstream from junction with burn from Little Ballia Clett
50k map sheet Yell (130)

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Map reference HU 317 828
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


S30214

Cross Polarized, S30214

Plane Polarized, S30214

Plane Polarized, S30214