BGS mineralogy and petrology collection record

Sample number S42251
Sample Donor Phemister,J.
Rock name 'Original entry: Muscovite-Biotite-Microcline-Oligoclase Gneiss'
Stratigraphy Not entered
Comments Schist; oligoclase porphyroblasts prior to K-permeation
Locality details E side of Salt Wick, 100 yds SW of Rana Point
50k map sheet Yell (130)

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Map reference HU 542 892
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


S42251

Cross Polarized, S42251

Plane Polarized, S42251

Plane Polarized, S42251