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Fayalite
(redirected from Iron silicate)

   Also found in: Dictionary/thesaurus, Wikipedia 0.02 sec.
fayalite [fə′yƤ‚līt]
(mineralogy)
Fe2SiO4A 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.



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The formation of iron silicates during casting and the resultant penetration can be eliminated by replacing silica with carbon sand.
2] combine to form a fluid slag that easily penetrates the molding media, resulting in an iron oxide iron silicate phase on the casting surface.
 
 
 
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