— staurolitic /stawr'euh lit"ik/ , adj.
/stawr"euh luyt'/ , n.
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.
[ 1790-1800; stauró ( s ) a cross + -LITE ]