BGS mineralogy and petrology collection record

Sample number S21467
Sample Donor Richey, James E.
Rock name 'Original entry: Tonalite'
Stratigraphy Not entered
Comments Central acid intrusion, near edge; Memoir, p. 340
Locality details 330 yds E of Achnaha
50k map sheet Coll (51)

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Map reference NM 4665 6826
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


S21467

Cross Polarized, S21467

Plane Polarized, S21467

Plane Polarized, S21467