Staurolite

Staurolite
Item# Staurolite

Group: Silicates - nesosilicates

Chemical composition: (Fe,Mg)4Al17(Si,Al)8O45(OH)3

Colors: Brown

Hardness: 7 to 7.5

Formation: Monoclinic crystal; pseudo-orthorhombic prismatic form

Principal Sources: Georgia; Mexico; France; Brazil

Special Notes: Named from the Greek stauros "cross" for its characteristic crosslike twinned form. The staurolite is also known as a "Fairy Stone" due to a Virginian legend about the origin of the stone's curious shape. The Fairy Stone State Park in Patrick County, Virginia, is named for this stone, which can be found there. It is the official state mineral of the U.S. state of Georgia.