BGS mineralogy and petrology collection record

Sample number S17921
Sample Donor Richey, James E.
Rock name 'Original entry: Quartz-Dolerite'
Stratigraphy Not entered
Comments Sgulan dolerite ring dyke; Sgulan type, Memoir, pp. 318-319
Locality details 460 yds SSE of summit of Beinn Chaisgidle
50k map sheet Mull (44)

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Map reference NM 6073 3292
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


S17921

Cross Polarized, S17921

Plane Polarized, S17921

Plane Polarized, S17921