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braunite

American  
[brou-nahyt] / ˈbraʊ naɪt /

noun

  1. an ore of manganese, 3Mn 2 O 3 ⋅MnSiO 3 .


braunite British  
/ ˈbraʊnaɪt /

noun

  1. a brown or black mineral that consists of manganese oxide and silicate and is a source of manganese. Formula: 3Mn 2 O 3 .MnSiO 3

"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 braunite

1830–40; named after A. E. Braun (1809–56), German official; -ite 1

Example Sentences

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The sesquioxide is found crystallized in an anhydrous form in braunite, and hydrated in manganite.

From Project Gutenberg