BGS mineralogy and petrology collection record

Sample number S21541
Sample Donor Richey, James E.
Rock name 'Original entry: Augite-Biotite Diorite'
Stratigraphy Not entered
Comments Tonalite with acid vein; Memoir, p. 339
Locality details 1100 yds ENE of Achnaha
50k map sheet Coll (51)

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Map reference NM 4702 6839
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


S21541

Cross Polarized, S21541

Plane Polarized, S21541

Plane Polarized, S21541