BGS mineralogy and petrology collection record

Sample number S32117
Sample Donor Allan,J.K.
Rock name 'Original entry: Muscovite-Biotite-Microcline-Oligoclase Gneiss'
Stratigraphy Not entered
Comments Muscovite-biotite-microcline-oligoclase gneiss. Permeation gneiss; brown biotite, much microcline
Locality details Point of Gunnald, Hascosay
50k map sheet Yell (130)

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Map reference HU 541 914
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


S32117

Cross Polarized, S32117

Plane Polarized, S32117

Plane Polarized, S32117