BGS mineralogy and petrology collection record

Sample number S17979
Sample Donor Richey, James E.
Rock name 'Original entry: Quartz-Dolerite'
Stratigraphy Not entered
Comments Sgulan dolerite ring-dyke; Sgulan Type; Memoir, p. 319
Locality details 970 yds WSW of summit of Beinn nan Lus
50k map sheet Mull (44)

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Map reference NM 5856 3993
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


S17979

Cross Polarized, S17979

Plane Polarized, S17979

Plane Polarized, S17979