BGS mineralogy and petrology collection record

Sample number S21350
Sample Donor Phemister,J.
Rock name 'Original entry: Spotted Fairly Leucocratic Basic Knot (Pulaskite)'
Stratigraphy Not entered
Comments Probably a hybrid rock due to reaction of perthosite with shonkinite or dark pulaskite
Locality details R bank of Oykell, 250 yds SW of entrance of Allt Sail an Ruathair
50k map sheet Lairg (102)

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Map reference NC 32579 12727
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


S21350

Cross Polarized, S21350

Plane Polarized, S21350

Plane Polarized, S21350