neptunite
noun
nep·tun·ite
\-ˌnīt\
Definition of neptunite
-s
: a mineral (Na,K)2(Fe,Mn)TiSi4O12 consisting of a silicate of iron, manganese, potassium, sodium, and titanium
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Origin and Etymology of neptunite
Swedish neptunit, from Latin Neptunus Neptune + Swedish -it -ite
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