BGS mineralogy and petrology collection record

Sample number S41708; S41708/A;
Sample Donor Phemister,J.
Rock name 'Original entry: Garnetiferous Chloritic Muscovite-Biotite-Oligoclase Gneiss'
Stratigraphy Not entered
Comments Pelitic gneiss with bluish aggregate
Locality details S point of Helliers Ness, 800 ft S by E of Helliersness Croft
50k map sheet Yell (130)

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Map reference HU 603 879
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


S41708

Cross Polarized, S41708

Plane Polarized, S41708

Plane Polarized, S41708


S41708/A

Cross Polarized, S41708/A

Plane Polarized, S41708/A

Plane Polarized, S41708/A