valentinite

American  

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

noun

1. a mineral, antimony trioxide, Sb 2 O 3 , formed by the oxidation of various minerals containing antimony and occurring in the form of white orthorhombic crystals.

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Etymology

Origin of valentinite

1855–60; < German Valentinit, named after Basil Valentine, 15th-century German alchemist; -ite ¹

Example Sentences

Cervantite, senarmontite, and valentinite are native oxides of ~.

From Project Gutenberg

Claudetite and valentinite though crystallizing in different systems have the same cleavages and very nearly the same angles, and are strictly isomorphous.

From Project Gutenberg

Antimony trioxide occurs as the minerals valentinite and senarmontite, and can be artificially prepared by burning antimony in air; by heating the metal in steam to a bright red heat; by oxidizing melted antimony with litharge; by decomposing antimony trichloride with an aqueous solution of sodium carbonate, or by the action of dilute nitric acid on the metal.

From Project Gutenberg