catapleiite

noun

cat·​a·​plei·​ite

ˌkatəˈplīˌīt

plural -s

: a rare mineral (Na₂,Ca)ZrSi₃O₉.2H₂O consisting of hydrous silicate of sodium, calcium, and zirconium occurring in thin tabular yellow or yellowish brown crystals (hardness 6, specific gravity 2.8)

Word History

Etymology

German katapleiit, from Greek kata in the region of, down + pleiōn more + -it -ite; from its occurrence together with other rare minerals

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