BGS mineralogy and petrology collection record

Sample number S21248
Sample Donor Richey, James E.
Rock name 'Original entry: Tonalite'
Stratigraphy Not entered
Comments Ring dyke; member of Tertiary plutonic complex; Memoir pp. 89, 338
Locality details Knoll at edge of moss 0.375 mile W 33 deg S of Glendrian
50k map sheet Coll (51)

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Map reference NM 4735 6873
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


S21248

Cross Polarized, S21248

Plane Polarized, S21248

Plane Polarized, S21248