NIOBITE is a playable word

niobite Scrabble® Dictionary

noun
pl. niobites
the mineral columbite
57 Playable Words can be made from "NIOBITE"
   2-Letter Words (15 found)
   3-Letter Words (22 found)
   4-Letter Words (13 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)