Description Trachyte from Coronet Hill, Royal Sound. Section of corroded sanidine with undulating extinction. 1/20 crossed nicols. Polarised light.
Plaats: Kerguelen IslandAuthor Anoniem in Renard (1888)JPG file - 138.01 kB - 648 x 794 pixelsadded on 2012-07-16657 viewsFrom reference Renard, A. (1888). Report on the rock specimens collected... (page 137)