BGS mineralogy and petrology collection record

Sample number S18484
Sample Donor Tait,D.
Rock name 'Original entry: Acid Interior Of Sill, With Fine-Grained Xenolith'
Stratigraphy Not entered
Comments Sapphire-bearing sill; Memoir, p. 273; uniaxial augite rock; many spinels in xenolith
Locality details Rubh' a' Chromain, N side of promontory
50k map sheet Mull (44)

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Map reference NM 5237 2031
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


S18484

Cross Polarized, S18484

Plane Polarized, S18484

Plane Polarized, S18484