a mineral, basic iron aluminum silicate, Fe 2 Al 2 O 7 (SiO 4) 4 (OH), occurring in brown to black prismatic crystals, which are often twinned in the form of a cross.
a brown glassy mineral consisting of iron aluminium silicate in the form of prismatic crystals: used as a gemstone. Formula: Fe2Al9Si4O11(OH)2
A brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Chemical formula: (FeMg)2Al9Si4O23(OH).
[stahv-raw-pee-yee-awn; English stav-roh-pee-jee-on] /ˌstɑv rɔˈpi yi ɔn; English ˌstæv roʊˈpi dʒiˌɒn/ noun, plural stauropegia [stahv-raw-pee-yee-ah; English stav-roh-pee-jee-uh] /ˌstɑv rɔˈpi yi ɑ; English ˌstæv roʊˈpi dʒi ə/ (Show IPA). Greek Orthodox Church. 1. (in an autocephalous church) a monastery subject directly to the primate.
stauroplegia stau·ro·ple·gi·a (stôr’ə-plē’jē-ə, -jə) n. See alternating hemiplegia.
noun 1. (obsolete) an optical instrument for studying the crystal structure of minerals under polarized light
noun 1. a seaport in SW Norway. noun 1. a port in SW Norway: canning and shipbuilding industries. Pop: 112 405 (2004 est)