BGS mineralogy and petrology collection record

Sample number S21472
Sample Donor Richey, James E.
Rock name 'Original entry: Tonalite'
Stratigraphy Not entered
Comments Central acid intrusion, near edge; Memoir, pp. 270, 340
Locality details 1300 yds E of Achnaha
50k map sheet Coll (51)

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Map reference NM 4747 6807
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


S21472

Cross Polarized, S21472

Plane Polarized, S21472

Plane Polarized, S21472