GIBBSITE is a playable word

gibbsite Scrabble® Dictionary

noun
pl. gibbsites
a mineral
65 Playable Words can be made from "GIBBSITE"
   2-Letter Words (10 found)
   3-Letter Words (24 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)