SINCE 1828
manganite
noun
man·ga·nite
| \ ˈmaŋ-gə-ˌnīt
\
\
Definition of manganite
1
: a metallic gray to black mineral MnO(OH) that is a hydroxide and minor ore of manganese
2
: any of various unstable salts made by reaction of manganese dioxide with a base
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