BGS mineralogy and petrology collection record

Sample number S28275
Sample Donor Read, H.H.
Rock name 'Original entry: Oligoclase-Porphyroblastic Muscovite-Biotite Gneiss'
Stratigraphy Not entered
Comments Blebby gneiss, Westing Group; sheared, epidotic, garnetiferous
Locality details Loch of Bordastubble, Snabrough
50k map sheet Unst (131)

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Map reference HP 575 030
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


S28275

Cross Polarized, S28275

Plane Polarized, S28275

Plane Polarized, S28275