holdenite

noun

hol·​den·​ite

ˈhōldəˌnīt

plural -s

: a mineral (Mn,Ca)₄(Zn,Mg,Fe)₂(AsO₄)(OH)₅O₂ consisting of a basic manganese zinc arsenate with minor calcium, magnesium, and iron and occurring as red orthorhombic crystals at Franklin, New Jersey

Word History

Etymology

Albert F. Holden †1913 American mining engineer + English -ite

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