BGS mineralogy and petrology collection record

Sample number S21468; S21468/A;
Sample Donor Richey, James E.
Rock name 'Original entry: Coarse Tonalite'
Stratigraphy Not entered
Comments Central acid intrusion, near edge; Memoir, pp. 338-339
Locality details 1000 yds ENE of Achnaha
50k map sheet Coll (51)

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Map reference NM 472 686
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


S21468

Cross Polarized, S21468

Plane Polarized, S21468

Plane Polarized, S21468


S21468/A

Cross Polarized, S21468/A

Plane Polarized, S21468/A

Plane Polarized, S21468/A