Description Nepheline rock with acmite from Greenland Harbour. The ground-mass is entirely composed of nepheline, numerous hexagonal or quadratic sections of which appear in the figure. In this there are greenish lamellar sections of acmite. 1/35 crossed nicols.
Plaats: Kerguelen IslandAuthor Anoniem in Renard (1888)JPG file - 453.10 kB - 915 x 863 pixelsadded on 2012-07-16565 viewsFrom reference Renard, A. (1888). Report on the rock specimens collected... (page 142)