BGS mineralogy and petrology collection record

Sample number S20702
Sample Donor Anderson, E.M.
Rock name 'Original entry: Rock Mainly Composed Of Garnet - And Quartz'
Stratigraphy Not entered
Comments Band of graphitic biotite granulite associated with S. 20693: some plagioclase
Locality details 800 ft NNW of Dun Cul Bhuirg
50k map sheet Iona (43)

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Map reference NM 2630 2469
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


S20702

Cross Polarized, S20702

Plane Polarized, S20702

Plane Polarized, S20702