Chiastolite Definition
kī-ăstə-līt
noun
A mineral variety of andalusite with carbonaceous impurities regularly arranged along the longer axis of the crystal.
American Heritage
Origin of Chiastolite
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Ancient Greek marked with a letter chi + -lite. See chiasm. So called from the resemblance of the crosscuts of its crystals to the Greek letter chi.
From Wiktionary
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From Greek khīastos crossed past participle of khīazein to mark with an X chiasma
From American Heritage Dictionary of the English Language, 5th Edition
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