• synonyms


  1. a sandstone consisting of interlocking quartz grains and mica scales, found principally in Brazil and North Carolina, and noted for its flexibility in thin slabs.
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Origin of itacolumite

1860–65; named after Itacolumi, mountain in Brazil; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for itacolumite

Historical Examples

  • Some authorities hold that the diamond has been formed in certain quartz veins which traverse the itacolumite.

    Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 8


  • Itacolumite is yellow or pale-brown, and splits readily into thin flat slabs.

British Dictionary definitions for itacolumite


  1. a fine-grained micaceous sandstone that occurs in thin flexible slabs
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Word Origin

C19: named after Itacolumi mountain in Brazil where it is found
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