BGS mineralogy and petrology collection record

Sample number S21839
Sample Donor Richey, James E.
Rock name 'Original entry: Bostonite'
Stratigraphy Not entered
Comments 7 ft acid dyke NW cut by cone sheet; Memoir, p. 355
Locality details 600 yds S 10 deg E of Greadal Fhinn (chambered cairn)
50k map sheet Coll (51)

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Map reference NM 4777 6339
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


S21839

Cross Polarized, S21839

Plane Polarized, S21839

Plane Polarized, S21839