BGS mineralogy and petrology collection record

Sample number S30642
Sample Donor Allan,J.K.
Rock name 'Original entry: Orthoclase-Oligoclase-Muscovite-Biotite Gneiss'
Stratigraphy Not entered
Comments Orthoclase-oligoclase-muscovite-biotite gneiss. K-permeation
Locality details Graveland, N end of Hill of Standing Stone
50k map sheet Yell (130)

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Map reference HU 460 966
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


S30642

Cross Polarized, S30642

Plane Polarized, S30642

Plane Polarized, S30642