- an ore of manganese, 3Mn2O3⋅MnSiO3.
Origin of braunite
1830–40; named after A. E. Braun (1809–56), German official; see -ite1
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Examples from the Web for braunite
Braunite, is a dark brown substance, of a glassy metallic lustre, affording a brown powder.
The sesquioxide is found crystallized in an anhydrous form in braunite, and hydrated in manganite.
- 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
C19: named after A. E. Braun (1809–56), German official in the treasury at Gotha
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