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 Renard (1888, fig. 11) Description Andesite of Ascension. Sections of plagioclase corroded by the magma, with a zone of small scales of hematite; the external felspathic zone is labradorite, the internal part of the plagioclase is more acid, the extinctions of which are those of andesine. 1/20 crossed nicols.Plaats: Ascension IslandJPG file - 846.29 kB - 1 681 x 956 pixelsadded on 2012-07-16516 viewsFrom reference Renard, A. (1888). Report on the rock specimens collected... (page 68) This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 LicenseClick here to return to the thumbnails overview |
