biotite

== English == === Etymology === From Biot +‎ -ite, named by J.F.L. Hausmann in 1847 in honour of the French physicist Jean-Baptiste Biot, who, in 1816, researched the optical properties of mica, discovering many unique properties. === Pronunciation === IPA(key): /ˈbaɪəˌtaɪt/ === Noun === biotite (countable and uncountable, plural biotites) (mineralogy) A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron. ==== Derived terms ==== ==== Translations ==== === Further reading === David Barthelmy (1997–2026), “Biotite”, in Webmineral Mineralogy Database. “biotite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026. == French == === Pronunciation === IPA(key): /bjɔ.tit/ === Noun === biotite f (plural biotites) (mineralogy) biotite === Further reading === “biotite”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012 == Italian == === Noun === biotite f (plural biotiti) (mineralogy) biotite === Anagrams === obietti