braunite

braunite [brou-nahyt] ExamplesWord Origin noun

1. 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. 2019 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

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

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