Renard (1888, fig. 12) Beschrijving: Amphibolic granite. Section of orthoclase with veinules of albite ranged in lines following the prismatic cleavage (microperthite). 1/40 crossed nicols.
Plaats: Ascension Island Auteur: Anoniem in Renard (1888) Uit bron: Renard, A. (1888). Report on the rock specimens collected... (pagina 70)
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