BGS mineralogy and petrology collection record

Sample number S21837
Sample Donor Richey, James E.
Rock name 'Original entry: Porphyritic Ophitic Dolerite'
Stratigraphy Not entered
Comments Porphyritic centre of 3 ft cone sheet; Memoir, p. 191
Locality details 450 yds W 35 deg S of Maol Buidhe
50k map sheet Coll (51)

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Map reference NM 4599 6230
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


S21837

Cross Polarized, S21837

Plane Polarized, S21837

Plane Polarized, S21837