Stau'ro-tīde, n.

n. [Fr. staurotide, fr. Gr. σταυρός, a cross, and εἶδος, form;—ill formed for stauroid.] (Min.) A mineral crystallized in rhombic prisms, either single or intersecting each other, so as to form a cross. Its color is usually brown or black. It is generally opaque, or nearly so, and consists essentially of silica, alumina, and oxide of iron.

☞ The name staurolite is sometimes applied to this mineral, as well as to the zeolite harmotome. Dana.