elpidite

noun
el·​pi·​dite | \ ˈelpəˌdīt\
plural -s

Definition of elpidite

: a mineral Na2ZrSi6O15.3H2O consisting of a hydrated sodium zirconium silicate

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History and Etymology for elpidite

Swedish elpidit, from Greek elpid-, elpis hope + Swedish -it -ite; from the expectation of finding other minerals in the same locality

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