BGS mineralogy and petrology collection record

Sample number S42518
Sample Donor Phemister,J.
Rock name 'Original entry: Garnetiferous Biotite-Oligoclase Gneiss'
Stratigraphy Not entered
Comments ?K-permeated; only scarce K-feldspar
Locality details Stream 140 yds SSW of Holligarth
50k map sheet Yell (130)

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Map reference HU 521 838
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


S42518

Cross Polarized, S42518

Plane Polarized, S42518

Plane Polarized, S42518