stau·ro·lite (stôr  -l t )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 st  - in Indo-European roots + -lite.]stau ro·litic (-l tk) adj. |
staurolite [ˈstɔːrəˌlaɪt]
n
(Earth Sciences / Minerals) a brown glassy mineral consisting of iron aluminium silicate in the form of prismatic crystals: used as a gemstone. Formula: Fe2Al9Si4O11(OH)2
[from Greek stauros a cross + -lite]
staurolitic [ˌstɔːrəˈlɪtɪk] adj
| staurolite (stour-lt) A brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Chemical formula: (FeMg)2Al9Si4O23(OH). |
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