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chalcomenite

noun chal·co·me·nite \ ˌkalkəˈmēˌnīt \
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Definition of chalcomenite

plural -s
: a mineral CuSeO3.2H2O consisting of copper selenite and occurring in blue crystals

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Origin and Etymology of chalcomenite

French chalcoménite, from chalc- + Greek mēnē moon + French -ite; from its being a compound of selenium, which is named for the moon

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