Dictionary.com
Thesaurus.com

breunnerite

British  
/ ˈbrɔɪnəˌraɪt /

noun

  1. an iron-containing type of magnesite used in the manufacture of refractory bricks

"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

Etymology

Origin of breunnerite

C19: named after Count Breunner , Austrian nobleman, + -ite 1