ludwigite

noun

lud·​wig·​ite

ˈlədˌwiˌgīt

plural -s

: a mineral (Mg, Fe)₂FeBO₅ consisting of an iron magnesium borate occurring in fibrous masses of a blackish green color

Word History

Etymology

German ludwigit, from Ernst Ludwig †1915 Austrian chemist + German -it -ite

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