- 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.
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
Some authorities hold that the diamond has been formed in certain quartz veins which traverse the itacolumite.
Itacolumite is yellow or pale-brown, and splits readily into thin flat slabs.
- a fine-grained micaceous sandstone that occurs in thin flexible slabs
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