valentinite

[ val-uhn-ti-nahyt, -tee-nahyt ]
/ ˈvæl ən tɪˌnaɪt, -ˌti naɪt /

noun

a mineral, antimony trioxide, Sb2O3, formed by the oxidation of various minerals containing antimony and occurring in the form of white orthorhombic crystals.

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Origin of valentinite

1855–60; <German Valentinit, named after Basil Valentine, 15th-century German alchemist; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020