单词	titanite
释义	titanite /ˈtʌɪtənʌɪt / noun Another term for sphene.During obduction, mantle-derived magmas most likely evolved to granitic compositions by assimilation of sediments and by fractional crystallization of amphibole, feldspar, titanite and allanite.... Magnetite, apatite, titanite and zircon make up the accessory minerals. Secondary titanite, chlorite, white mica and pyrrhotite are abundant, and some samples contain metamorphic biotite. Origin Late 18th century: from titanium + -ite1.
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