BGS mineralogy and petrology collection record

Sample number S21477
Sample Donor Richey, James E.
Rock name 'Original entry: Gabbro'
Stratigraphy Not entered
Comments ?Ring dyke between central acid intrusion and eucrite; a very coarse variety; Memoir, p. 329
Locality details 2200 yds E by N of Achnaha
50k map sheet Coll (51)

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Map reference NM 4819 6849
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


S21477

Cross Polarized, S21477

Plane Polarized, S21477

Plane Polarized, S21477