• Webster's Revised Unabridged Dictionary
    • n Staurolite (Min) A mineral of a brown to black color occurring in prismatic crystals, often twinned so as to form groups resembling a cross. It is a silicate of alumina and iron, and is generally found imbedded in mica schist. Called also granatite, and grenatite.
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Century Dictionary and Cyclopedia
    • n staurolite A silicate of aluminium and iron occurring in reddish- to yellowish-brown or brownish-black prismatic crystals. These crystals are often twins, in the form of a cross, whence it is called cross-stone. Also staurotide, qrenatite.
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Chambers's Twentieth Century Dictionary
    • n Staurolite stawr′ō-līt a silicate of alumina with ferrous oxide, magnesia, and water, crystallising in trimetric forms, common as twinned cruciform crystals in certain states
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Webster's Revised Unabridged Dictionary
Gr. stayro`s a cross + -lite,


In literature:

Kyanite and staurolite may also be mentioned as occasionally occurring.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2" by Various