BGS mineralogy and petrology collection record

Sample number S41660
Sample Donor Phemister,J.
Rock name 'Original entry: Muscovite-Biotite Gneiss'
Stratigraphy Not entered
Comments Permeated pelitic gneiss
Locality details Promontory, 1600 ft 20 deg W of N of trig pt on Gillis Field
50k map sheet Yell (130)

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Map reference HU 618 890
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


S41660

Cross Polarized, S41660

Plane Polarized, S41660

Plane Polarized, S41660