fergusonite

noun fer·gu·son·ite \ ˈfərgəsəˌnīt \

Definition of fergusonite

plural -s
: a brownish black mineral (Y,Er,Ce,Fe,)(Nb,Ta,Ti)O4 consisting essentially of an oxide of yttrium, erbium, niobium, and tantalum with other metals often including uranium and isomorphous with formanite (hardness 5.5–6)

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Origin and Etymology of fergusonite

Robert Ferguson †1865 Scottish physician + English -ite


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