erythrite

noun
er·​y·​thrite | \ˈer-ə-ˌthrīt \

Definition of erythrite 

: a usually rose-colored mineral consisting of a hydrous cobalt arsenate occurring especially in monoclinic crystals

First Known Use of erythrite

1844, in the meaning defined above

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The first known use of erythrite was in 1844

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