BGS mineralogy and petrology collection record

Sample number S18477
Sample Donor Tait,D.
Rock name 'Original entry: Bostonite'
Stratigraphy Not entered
Comments Sapphire-bearing sill; Memoir, pp. 191, 193 & Fig. 28C
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


S18477

Cross Polarized, S18477

Plane Polarized, S18477

Plane Polarized, S18477