The word fluorapatite is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 20
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (56 words)
apatite, apteria, atropia, aureola, earflap, failure, fattier, firepot, flareup, flatout, flatter, flattop, fleapit, floater, flouter, flutter, foliate, fortlet, furoate, loftier, outfire, outleap, outlier, outrate, parfait, partial, patrial, patriot, plateau, platter, plotter, plouter, politer, portlet, poulter, poutier, prattle, profile, puttier, rattail, refloat, refutal, repilot, replait, retotal, tearful, tertial, tiptoer, titular, toluate, toprail, trefoil, triplet, tripole, tuftier, uralite