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fayaliteenUK
fay·a·lite F0058000 (fā′ə-līt′)n. A yellowish to black mineral, Fe2SiO4, of the olivine group.
[German Fayalit, from Fayal, Faial.]fayalite (ˈfeɪəˌlaɪt; faɪˈɑːlaɪt) n (Minerals) a rare brown or black mineral of the olivine group, consisting of iron silicate. Formula: Fe2SiO4[C19: named after Fayal]FayaliteenUK
fayalite[fə′yä‚līt] (mineralogy) Fe2SiO4 A brown to black mineral of the olivine group, consisting of iron silicate and found either massive or in crystals; specific gravity is 4.1. Fayalite a mineral of the olivine group; the final member of the forsterite-fayalite solid-solution series. Fayalite has the chemical composition Fe2[SiO4], and it contains up to 10 percent of the forsterite component. It is found with acidic and alkalic rocks, metamorphosed iron-rich sediments, pegmatites, and other rocks. Fayalite is also detected in industrial slags. |