margarosanite

noun mar·ga·ro·san·ite \ˌmärgəˈrōsənˌīt\

Definition of margarosanite

plural

-s

  1. :  a mineral PbCa2(SiO3)3 consisting of a lead calcium silicate occurring in colorless lamellar masses

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Origin and Etymology of margarosanite

Greek margaron pearl + sanis board + English -ite; from its pearly luster and lamellar structure; probably akin to Greek sathē penis, sainein to wag the tail, Old English thūma thumb — more at thumb


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