BGS mineralogy and petrology collection record

Sample number S21478
Sample Donor Richey, James E.
Rock name 'Original entry: Monzonite'
Stratigraphy Not entered
Comments ?Ring dyke between central acid intrusion and eucrite; rich biotite vein; Memoir, p. 322, 325
Locality details 2100 yds E by N of Achnaha
50k map sheet Coll (51)

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Map reference NM 4798 6751
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


S21478

Cross Polarized, S21478

Plane Polarized, S21478

Plane Polarized, S21478