 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 Island
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added on 2012-07-16586 viewsFrom reference Renard, A. (1888). Report on the rock specimens collected... (page 68)
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