witherite

noun
with·​er·​ite | \ˈwi-t͟hə-ˌrīt \

Definition of witherite 

: a translucent white or gray orthorhombic mineral consisting of a carbonate of barium

First Known Use of witherite

1794, in the meaning defined above

History and Etymology for witherite

German Witherit, irregular from William Withering †1799 English physician

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The first known use of witherite was in 1794

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