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olivine in British English
(ˈɒlɪˌviːn, ˌɒlɪˈviːn)
noun
1.
an olive-green mineral of the olivine group, found in igneous and metamorphic rocks. The clear-green variety (peridot) is used as a gemstone. Composition: magnesium iron silicate. Formula: (MgFe)2SiO4. Crystal structure: orthorhombic
Also called: chrysolite2.
any mineral in the group having the general formula (Mg,Fe,Mn,Ca)2SiO4
Word origin
C18: from German, named after its colourolivine in American English
(ˈɑləˌvin)
noun
a hard, greenish mineral, (Mg,Fe)2SiO4, that is an ore of magnesium, used as a refractory; magnesium iron silicate
Derived forms
olivinic (ˌoliˈvinic) (ˈɑəˈvɪnɪk) adjective
Word origin
olive + -ine1Image ofolivine
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