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wall rock

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noun Mining.

the rock forming the walls of a vein.

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Origin of wall rock

An Americanism dating back to 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use wall rock in a sentence

British Dictionary definitions for wall rock

wall rock

noun

rock that is immediately adjacent to a mineral vein, fault, or igneous intrusion
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
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