braunite

[brou-nahyt]

noun

an ore of manganese, 3Mn2O3⋅MnSiO3.

Origin of braunite

1830–40; named after A. E. Braun (1809–56), German official; see -ite¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for braunite

Historical Examples of braunite

Braunite, is a dark brown substance, of a glassy metallic lustre, affording a brown powder.
A Dictionary of Arts, Manufactures and Mines
Andrew Ure
The sesquioxide is found crystallized in an anhydrous form in braunite, and hydrated in manganite.
Scientific American Supplement, No. 401, September 8, 1883
Various

British Dictionary definitions for braunite

braunite

noun

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

Word Origin for braunite

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