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basanite

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bas⋅a⋅nite

[bas-uh-nahyt, baz-]
–noun Petrography.
a basaltic rock composed chiefly of plagioclase, olivine, and augite.

Origin:
1745–55; < L basanītēs; see basalt
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Encyclopedia

basanite

extrusive igneous rock that contains calcium-rich plagioclase feldspar (usually labradorite or bytownite), feldspathoid (usually nepheline or leucite), olivine, and pyroxene (titanaugite). Basanite grades into tephrite, which contains no olivine.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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