Forsterite

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forsterite

[′fȯr·stə‚rīt]
(mineralogy)
Mg2SiO4 A whitish or yellowish, magnesium-rich variety of olivine. Also known as white olivine.

Forsterite

 

(named after the German scientist J. R. Forster, 1729–98), a mineral of the olivine group; the last member of the isomorphous forsterite series is fayalite. Forsterite has the chemical composition Mg2[SiO4] and contains 90–100 percent forsterite component. It is a rock-forming mineral of ultrabasic rocks. It also occurs in metamorphosed dolomites, marbles, and magnesianskarns.