BGS mineralogy and petrology collection record

Sample number S21348; S21348/A;
Sample Donor Phemister,J.
Rock name 'Original entry: Biotite Pulaskite'
Stratigraphy Not entered
Comments Incontact with marble, contains accessory felspathoids; biotite probably due to a secondary transformation of pyroxene
Locality details Crag 145 yds NW of NW corner, Loch Sail an Ruathair
50k map sheet Lairg (102)

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Map reference NC 33004 15032
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


S21348

Cross Polarized, S21348

Plane Polarized, S21348

Plane Polarized, S21348


S21348/A

Cross Polarized, S21348/A

Plane Polarized, S21348/A

Plane Polarized, S21348/A