BGS mineralogy and petrology collection record

Sample number S22247
Sample Donor Richey, James E.
Rock name 'Original entry: Contact-Altered Quartz-Dolerite'
Stratigraphy Not entered
Comments Porphyritic quartz-dolerite cone sheet, baked; Memoir, p. 237
Locality details 160 yds NW of Kilchoan Free Church
50k map sheet Coll (51)

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Map reference NM 4793 6434
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


S22247

Cross Polarized, S22247

Plane Polarized, S22247

Plane Polarized, S22247