pirssonite
/ˈpəːsənʌɪt/ /ˈpɪəsənʌɪt/Mineralogy
noun
A mineral of the orthorhombic crystal system which consists of an hydrated carbonate of sodium and calcium, Na2Ca(CO3)2.2H2O, and occurs as brittle pyroelectric crystals.
Origin
Late 19th century. From the name of L. V. Pirsson, U.S. geologist + -ite.
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- wintrily