andesite definition

  • noun:
    • A gray, fine-grained volcanic rock, chiefly plagioclase and feldspar.
    • A class of fine-grained intermediate igneous rock, of volcanic origin, containing mostly plagioclase feldspar.
    • An eruptive stone allied to trachyte, consisting really of a triclinic feldspar, with pyroxene, hornblende, or hypersthene.
    • A volcanic rock of wide-spread occurrence, particularly in the Cordilleran region of the united states.
    • a dark gray volcanic stone
    • A gray, fine-grained volcanic stone, chiefly plagioclase and feldspar.
    • a course of fine-grained intermediate igneous stone, of volcanic source, containing mostly plagioclase feldspar.
    • An eruptive stone allied to trachyte, consisting basically of a triclinic feldspar, with pyroxene, hornblende, or hypersthene.
    • A volcanic rock of wide-spread event, particularly in the Cordilleran region of North America.
    • a dark gray volcanic rock

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    • An extrusive often dark grayish stone…
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