BGS mineralogy and petrology collection record

Sample number S20865
Sample Donor Burnett, G.
Rock name 'Original entry: Alkali Dolerite'
Stratigraphy Not entered
Comments Pegmatite; segregation in plateau basalt; Memoir, p. 137, Fig. 19B and p. 139
Locality details 1900 ft SE of Ormaig
50k map sheet Iona (43)

View images in GeoScenic related to 'Iona'

View the geology near 'Iona'

Map reference NM 4194 3832
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


S20865

Cross Polarized, S20865

Plane Polarized, S20865

Plane Polarized, S20865