fayalite

== English == === Etymology === From Fayal (“Faial Island in the Azores”) +‎ -ite. Named in 1840. === Noun === fayalite (countable and uncountable, plural fayalites) (mineralogy) Yellow, olive green, brown or black mineral with orthorhombic crystals of the olivine group, Fe2SiO4. ==== Derived terms ==== ==== Translations ==== === References === === Further reading === David Barthelmy (1997–2026), “Fayalite”, in Webmineral Mineralogy Database. “fayalite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026. == French == === Noun === fayalite f (plural fayalites) (mineralogy) fayalite == Italian == === Noun === fayalite f (plural fayaliti) (mineralogy) fayalite