The Collaborative International Dictionary of English v.0.48:

Staurotide \Stau"ro*tide\ (st[add]"r[-o]*t[imac]d), n. [F.
   staurotide, from Gr. stayrwto`s cruciform (from Gr. stayro`s
   a cross) + e'i^dos form.] (Min.)
   Staurolite.
   [1913 Webster]