ardennite

noun

ar·​den·​nite

ärˈdeˌnīt

plural -s

: a mineral Mn₅Al₅(VO₄)(SiO₄)₅(OH)₂·2H₂O consisting of a hydrous silicate vanadate and arsenate of manganese and aluminum

Word History

Etymology

German ardennit, from Ardennes region, Belgium, its locality + German -it -ite

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