formanite
noun
for·man·ite
ˈfȯrməˌnīt
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
Etymology
Francis German Forman, 20th century Australian geologist + English -ite