akrochordite

noun

ak·​ro·​chor·​dite

ˌa-krō-ˈkȯr-ˌdīt

plural -s

: a mineral MgMn₄(AsO₄)₂(OH)₄·4H₂O(?) consisting of a hydrous basic manganese magnesium arsenate occurring in reddish brown rounded aggregates (hardness 3, specific gravity 3.2)

Word History

Etymology

Greek akrochordōn wart + English -ite

First Known Use

1922, in the meaning defined above

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