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chiastolite

[kahy-as-tl-ahyt]
noun
  1. a variety of the mineral andalusite having cruciform carbonaceous inclusions.
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Origin of chiastolite

1795–1805; alteration of chiastolith (see -lite), equivalent to Greek chiastó(s) set crosswise (see chiasma) + -lith
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for chiastolite

chiastolite

noun
  1. a variety of andalusite containing carbon impuritiesAlso called: macle
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Word Origin

C19: from German Chiastolith, from Greek khiastos crossed, marked with a chi + lithos stone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012