bra-unite

braunite

[brou-nahyt]
noun
an ore of manganese, 3Mn 2 O 3 ⋅MnSiO 3 .

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

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braunite (ˈbraʊnaɪt)
 
n
a brown or black mineral that consists of manganese oxide and silicate and is a source of manganese. Formula: 3Mn2O3.MnSiO3
 
[C19: named after A. E. Braun (1809--56), German official in the treasury at Gotha]

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