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A whitish or yellowish form of the mineral olivine, Mg2SiO4, in which the mafic component consists entirely of magnesium.

[After Adolarius Jacob Forster (1739-1806), English mineral collector.]


(Minerals) a white, yellow, or green mineral of the olivine group consisting of magnesium silicate. Formula: Mg2SiO4
[C19: named after J. R. Forster (1729–98), German naturalist]
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When the tide shifted away, Miller followed the Fosterite policy that the only good literature was the politically correct kind.
The effects of time and temperature were investigated, and the results show that an increase in these factors caused the phase transformation of the phlogopite to fosterite and leucite.
Standards used were pure niobium and tantalum metals (Nb, Ta), Rockport fayalite (Fe), Nuevo garnet (Mn) and Webster fosterite (Mg).