Description Amphibolic granite. Section of orthoclase with veinules of albite ranged in lines following the prismatic cleavage (microperthite). 1/40 crossed nicols.
Plaats: Ascension IslandAuthor Anoniem in Renard (1888)JPG file - 398.44 kB - 807 x 788 pixelsadded on 2012-07-16768 viewsFrom reference Renard, A. (1888). Report on the rock specimens collected... (page 70)