BGS mineralogy and petrology collection record

Sample number S22048
Sample Donor Phemister,J.
Rock name 'Original entry: 'Basic Knot'; Basic Pulaskite (Hybrid)'
Stratigraphy Not entered
Comments Basic knob in syenite containing an ultrabasic xenolith segregation
Locality details In Black Rock Burn 952 yds 10 deg N of W of junction of R Oykell with Allt an Sail Ruathair
50k map sheet Lairg (102)

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Map reference NC 31827 13162
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


S22048

Cross Polarized, S22048

Plane Polarized, S22048

Plane Polarized, S22048