[stawr-uh-lahyt] 
| a mineral, basic iron aluminum silicate, Fe2Al2O7(SiO4)4(OH), occurring in brown to black prismatic crystals, which are often twinned in the form of a cross. |
[stawr-uh-lit-ik] , adjective | stau·ro·lite (stôr'ə-līt') n. A brownish to black mineral, chiefly (FeMg)2Al9Si4O23(OH), often having crossed intergrown crystals and sometimes used as a gem. [Greek stauros, cross; see stā- in Indo-European roots + -lite.] stau'ro·lit'ic (-lĭt'ĭk) adj. |
| staurolite (stou'rə-līt') Pronunciation Key
A brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Chemical formula: (FeMg)2Al9Si4O23(OH). |
əˌlaɪt