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polybasite

[pol-ee-bey-sahyt, puh-lib-uh-sahyt]
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noun
  1. a blackish mineral, Ag9SbS6: a minor ore of silver.
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Origin of polybasite

From the German word Polybasit, dating back to 1820–30. See poly-, base1, -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for polybasite

polybasite

noun
  1. a grey to black mineral consisting of a sulphide of silver, antimony, and copper in the form of platelike monoclinic crystals. It occurs in veins of silver ore. Formula: (Ag,Cu) 16 Sb 2 S 11
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Word Origin

C19: from poly- + base 1 + -ite 1
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