BGS mineralogy and petrology collection record

Sample number S20812
Sample Donor Bailey, E.B.
Rock name 'Original entry: ?Porphyry (Mica Trap)'
Stratigraphy Not entered
Comments Dyke cut off on foreshore; approaching malchite; Pre-Tertiary Mem, p. 55
Locality details 700 ft SE of Bogha nan Cruban
50k map sheet Iona (43)

View images in GeoScenic related to 'Iona'

View a geological map near 'Iona'

Map reference NM 4448 3366
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


S20812

Cross Polarized, S20812

Plane Polarized, S20812

Plane Polarized, S20812