plural -s
: a mineral (U,Zr,Th,Ca)(Ta1Nb)O4 consisting essentially of an oxide of uranium, zirconium, thorium, calcium, tantalum, and niobium with some rare-earth metals and isomorphous with fergusonite

Word History


Francis German Forman, 20th century Australian geologist + English -ite

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Dictionary Entries Near formanite

Cite this Entry

“Formanite.” Dictionary, Merriam-Webster, Accessed 30 Sep. 2023.

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